In depth analysis of the internal structure and working principle of Roots blower
Roots blower is a type of positive displacement blower, and its internal structure mainly includes the following key parts:
1. Shell: The shell is the main part of a Roots blower, usually made of cast iron or steel plate, with sufficient strength and rigidity to withstand the internal pressure and external loads of the blower. The casing mainly plays a supporting and fixing role, providing protection and working space for the internal impeller and other components.
2. Wall panel: The wall panel is used to connect the casing with the impeller and support the rotation of the impeller. At the same time, the wall panel also plays a role in sealing the end face, ensuring effective compression and transportation of gas inside the fan.
3. Impeller: The impeller is the core component of a Roots blower, usually made of aluminum alloy or cast iron, with two or three blades (three bladed impellers are more common because they have advantages in air pulsation, noise, and smooth operation). Leave gaps between the blades to ensure that they do not collide with each other during rotation. The impeller maintains the correct phase through synchronous gears, ensuring that the two impellers rotate at a constant speed in opposite directions.
4. Drive shaft and driven shaft: The drive shaft and driven shaft are respectively connected to the drive impeller and the driven impeller, and are supported in the casing through bearings. The driving shaft is usually driven by an electric motor or diesel engine, which drives the driven shaft and impeller to rotate together.
5. Gears: Gears are used to connect the driving shaft and the driven shaft, ensuring that the two impellers can rotate synchronously and in reverse. Gears are usually made of high-strength alloy steel, which has sufficient wear resistance and impact resistance.
6. Bearings: Bearings are used to support the driving and driven shafts, reduce friction and wear, and ensure the smooth operation of the fan. Bearings are usually either rolling bearings or sliding bearings, depending on the specifications and operating environment of the fan.
7. Oil seal: Oil seal is used to ensure the sealing performance of the fan when gear oil leaks into the interior or external environment of the casing. Oil seals are usually made of rubber or plastic and have sufficient elasticity and wear resistance.
8. Oil tank: The oil tank is mainly used to store lubricating oil, which is used to lubricate gears and bearings, ensuring the normal operation of the fan and extending its service life.
9. Muffler: Muffler is used to reduce the noise generated by airflow pulsation during the intake and exhaust process of Roots blower, and improve the performance of the equipment.
In addition, Roots blowers may also include other components such as air intakes, exhaust outlets, seals, etc., which work together to ensure the normal operation and performance of the blower.
Overall, the internal structure of the Roots blower is exquisitely designed and compact, with various components working together to achieve effective compression and transportation of gas. Meanwhile, its advantages such as simple structure, convenient manufacturing, and stable operation have also made it widely used in multiple fields and industries.
