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Greentech International (Zhangqiu) Co., Ltd.’s Three-Lobe Roots Blowers Demonstrate Strong Technical

Post time: 2026-08-31 15:13:20

In recent years, as demand for energy-efficient, high-performance, and low-noise equipment continues to grow in areas such as environmental protection, water treatment, pneumatic conveying, and industrial production, Roots blowers have become an important source of power in many industrial applications due to their stable performance and wide range of uses. Greentech International (Zhangqiu) Co., Ltd. continues to strengthen product development and upgrade its manufacturing processes. Its three-lobe Roots blowers, optimized and redesigned based on advanced technologies, demonstrate outstanding performance in efficiency, noise control, service life, and operational stability. The products cover a flow range of 0.42-850 m³/min and a pressure increase range of 9.8-196 KPa, meeting the requirements of different operating conditions.

Continuous Technological Upgrades for Three-Lobe Roots Blowers

Composite Rotor Design Improves Operating Efficiency

Greentech International (Zhangqiu) Co., Ltd.’s three-lobe Roots blowers are redesigned based on the advantages of advanced international technologies. The blowers feature a new composite rotor profile and are manufactured using high-precision CNC rotor machining centers.

The high-precision machining process helps maintain proper clearances between the rotors, reduce internal leakage, and lower operating temperatures, thereby improving volumetric efficiency. At the same time, the optimized rotor profile helps reduce airflow pulsation and operating noise, allowing the equipment to operate more smoothly and efficiently.

Water-Cooled Structure and High-Strength Materials Extend Service Life

For high-pressure operating conditions, the blowers feature water-cooled side plates, which can effectively reduce the internal gas temperature by approximately 8-10°C. This increases outlet gas density and mass capacity while helping bearings operate at lower temperatures, thereby extending the service life of critical components.

For key components such as the casing and side plates, high-strength HT200 gray cast iron is used to enhance overall structural strength. The gears are manufactured from high-quality alloy steels such as 20CrMo and 40CrMo and undergo carburizing or nitriding treatment. Gear surface hardness reaches HRC56-58, while gear accuracy reaches Grade 5, providing a solid foundation for long-term and stable operation.

In addition, the blowers adopt labyrinth seals for effective sealing performance. The gears and bearings use splash lubrication, reducing the risk of equipment damage caused by oil pump failures and lubrication interruptions.

Strict Manufacturing Processes Ensure Product Quality

Multiple Manufacturing Processes Ensure Component Precision

Greentech International (Zhangqiu) Co., Ltd. has established a rigorous quality control system throughout the manufacturing process. Castings undergo controlled material preparation, casting, and aging treatment in accordance with relevant technical requirements and are professionally inspected before entering production. Key components such as casings and side plates are machined using dedicated CNC equipment, with center-distance errors controlled within 0.02 mm.

After heat treatment, gears are processed using precision gear grinding equipment and then undergo carburizing hardening or nitriding treatment to ensure high wear resistance and a long service life. Rotor assemblies are also subjected to strict static and dynamic balancing tests, with dynamic balancing accuracy reaching G2.5 or higher.

From castings and rotors to casings and gears, multiple process controls and inspection procedures provide comprehensive quality assurance.

Strict Factory Testing Ensures Performance

In addition to quality control during manufacturing, each blower undergoes strict performance testing before leaving the factory. Products are tested in accordance with relevant standards and are shipped only after passing inspection. The exterior surfaces are carefully finished to achieve a smooth, uniform, and bright coating, combining functional performance with overall product quality.

Comprehensive Auxiliary Equipment for Diverse Applications

To meet the operating requirements of Roots blower systems, Greentech International (Zhangqiu) Co., Ltd. can also provide auxiliary equipment including air filters, inlet and outlet silencers, low-pressure safety valves, check valves, flexible connectors, and acoustic enclosures.

Air filters remove impurities from incoming air and help protect the blower. Inlet and outlet silencers reduce airflow noise, while safety valves and check valves provide overpressure protection and prevent high-pressure gas backflow. Flexible connectors help reduce the impact of pipeline vibration on blower operation, while acoustic enclosures further reduce operating noise and improve the overall working environment.

Advancing Product Quality Through Technology and Manufacturing Expertise

With mature product design capabilities, refined manufacturing processes, and comprehensive quality control, the three-lobe Roots blowers produced by Greentech International (Zhangqiu) Co., Ltd. have been widely used in a variety of industries.

As industrial customers place increasing emphasis on energy efficiency, operational stability, and equipment reliability, the company will continue to optimize product performance, manufacturing precision, and operating efficiency.

From high-precision rotor machining and strict control of key components to comprehensive auxiliary equipment, Greentech International (Zhangqiu) Co., Ltd. continues to leverage its technical expertise and manufacturing capabilities to provide customers with more efficient, stable, and durable Roots blower solutions while further strengthening its competitiveness in the Roots blower market.

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