The structure of Roots blower mainly includes the following key parts:
1、 Core component: rotor
1. Shape and arrangement: The core of a Roots blower lies in its unique two bladed rotors, which are typically arranged in an 8-shaped or three bladed spiral pattern. Three bladed rotors have advantages over two bladed rotors, such as smaller exhaust pulses, lower noise, and stable operation.
2. Gap control: There is a small gap between the rotors and they do not come into direct contact. This design enables the rotor to form a gas delivery channel when rotating relative to each other inside the cylinder, while preventing wear caused by direct contact.
2、 Supporting and protective components: chassis
1. Shape and Function: The casing is usually a cylindrical structure that firmly supports the rotor and provides necessary protection.
2. Import and export settings: The two ends of the casing are respectively equipped with inlet and outlet ports to ensure smooth entry and exit of gas. Meanwhile, it also maintains a constant gap between the rotors to prevent gas leakage.
3、 Drive components: synchronous gear and bearings
1. Synchronous gear: a precision gear device located at the end of the rotor shaft, which drives two rotors to rotate synchronously in reverse through a transmission device. These gears ensure the accuracy of the relative position between the rotors, thereby ensuring stable gas delivery.
2. Bearings: High quality bearings are used to support the rotor shaft, ensuring its stability during high-speed operation. At the same time, bearings also need to withstand axial and radial loads generated by gas pressure.
4、 Sealing components
Shaft seal and housing seal: These components ensure the sealing effect of the gap between the rotor and the housing, thereby preventing gas leakage and lubricating oil from entering the air chamber.
5、 Auxiliary components
1. Cooling system: In high load or high temperature operating environments, Roots blowers may be equipped with air cooling, water cooling, or oil cooling systems to control the operating temperature of bearings and gears and ensure their stable operation.
2. Muffler and soundproof cover: Due to the loud noise generated by Roots blowers during operation, mufflers are usually installed to reduce exhaust noise, or soundproof covers are used to reduce overall noise emissions.
In addition, Roots blowers may also include wall panels (used to connect the casing and impeller, support impeller rotation and end face sealing), inlet and outlet silencers, motors, motor rods, belt pulleys, belt covers, tees, pressure reducing valves, check valves, pressure gauges and other accessories. These components work together to ensure the normal operation and performance of the Roots blower.
In summary, Roots blowers have been widely used in the industrial field due to their unique structure and design advantages.
