Our company also produces explosion-proof Roots blowers, high-pressure Roots blowers, biogas booster fans, stainless steel Roots blowers, Roots vacuum pumps, rotary fans, and other Roots blower products, providing research and development, manufacturing, sales, and services as a whole.

The Roots blower is composed of five main parts: the housing, wall plate, impeller, oil tank, and muffler.

Shell: Primarily serves to support (wall panels, impellers, mufflers) and secure.

Wall plates: Primarily used to connect the housing to the impeller, supporting its rotation, and providing an end seal.

Blade Wheel: The rotating part of the Roots blower, available in two and three blades. Due to the many advantages such as less exhaust pulsation, lower noise, and smoother operation, the three-blade version has gradually replaced the two-blade Roots blower.

Fuel Tank: Primarily used for storing lubricating oil used to grease gears and bearings.

Silencer: Used to reduce the noise generated by the pulsation of air flow during the intake and exhaust of a Roots blower.

Principle

Root blowers are a type of volumetric blower with two three-bladed impellers rotating in a sealed space between the housing and wall plates. Each impeller is formed by the involute or the envelope of an epitrochoid, resulting in three identical blades on each impeller and two identical impellers overall, significantly reducing the manufacturing difficulty. The impellers are machined using CNC equipment, ensuring that under a constant center distance, regardless of their rotational position, they maintain a consistent small gap, thereby keeping gas leakage within allowable limits.

Two impellers rotate in opposite directions. Due to the small gaps between the impellers and the housing, as well as between the impellers and the wall plate, a vacuum is formed at the inlet. Air is drawn into the inlet chamber under the force of atmospheric pressure. Then, two blades of each impeller, along with the wall plate and housing, form a sealed chamber. As the impellers rotate, the air in the inlet chamber is continuously transferred to the exhaust chamber by the sealed chamber formed by the two blades. Since the impellers in the exhaust chamber mesh with each other, they squeeze out the air between the two blades. This continuous operation ensures a steady flow of air from the inlet to the outlet, which is the entire operation process of a Roots blower.

The fan oil seal is made of imported fluoroelastomer material, which is heat-resistant, wear-resistant, and has a long service life.