The 11kW Roots blower is a common industrial equipment. The following introduces its working principle, performance characteristics, application fields, selection parameters, and market brands:
1、 Working principle
Roots blower belongs to the positive displacement blower, and its core structure consists of a casing, wall panels, impellers, and inlet and outlet mufflers. Two three bladed rotors are driven by synchronous gears and rotate in opposite directions at a constant speed inside the cylinder. Maintain small gaps between impellers, impellers and the casing and wall panels to avoid contact friction. Gas is sucked in, compressed, and transported as the rotor rotates, and stable gas delivery is achieved by controlling the exhaust pressure.
2、 Performance characteristics
Compact structure, stable operation
The three bladed rotor design reduces exhaust pulses, vibration, and noise levels, making it suitable for continuous operation in industrial scenarios.
Forced gas transmission with constant flow rate
The output air volume is proportional to the speed, and is less affected by changes in outlet pressure, providing a stable air source.
Easy maintenance and long lifespan
Key components such as bearings and gears are made of wear-resistant materials and equipped with a reasonable lubrication system, greatly extending the service life of the equipment.
Strong adaptability
It can transport clean air or gases containing a small amount of dust, suitable for various industrial media environments.
3、 Application Fields
sewage treatment
Provide oxygen to the aeration tank in the activated sludge process to promote microbial decomposition of organic matter; At the same time, accelerating the mixing of pollutants and chemicals through airflow stirring improves treatment efficiency.
aquaculture
By inflating the pond with an aeration system, the dissolved oxygen in the water is increased, providing a suitable living environment for aquatic organisms such as fish.
pneumatic conveying
Used for conveying powdered materials such as cement, flour, coal powder, or granular materials such as plastic particles and grains, achieving continuous and stable material transfer.
Smelting and Chemical Industry
Provide high-pressure air for blast furnaces to maintain combustion, or transport process gases such as hydrogen and nitrogen in chemical production.
Power industry
Transport the necessary air for combustion to the boiler, ensuring full combustion of the fuel and maintaining pressure balance inside the furnace.
4、 Selection parameters
Taking the SR series as an example, the common models and air volume parameters of the 11kW Roots blower are as follows:
SR80： The air volume range is 5.31-5.44m3/min, suitable for small aeration systems.
SR100： The air volume range is 5.58-9.25m3/min, which can meet the needs of medium-sized aquaculture.
SR125： The air volume range is 5.37-13.39m3/min, supporting high load sewage treatment scenarios.
SR150： The air volume range is 11.02-22.00m3/min, suitable for large-scale pneumatic conveying projects.
SR175： The air volume is 22.73m3/min, designed specifically for large-scale aeration needs.
5、 Market Brands and Products
brand
Shandong fan: provides SR125-11kW three blade Roots blower, suitable for oxygenation in aquaculture.
Zhangqiu Changsheng Machinery: launches SR125B 11kW fan, supporting customized services.
Jiangsu Ruizhe Environmental Protection: produces 11kW submerged Roots blower, suitable for river treatment.
product type
The market covers special fans such as explosion-proof, high-temperature resistant, and low-noise types, and some models support dual fuel tank design to further reduce operating noise.
