roots air blower

What is roots air blower?

• Roots air blower is a positive displacement fan, also known as Roots blower or Ruthen blower. ‌It uses two leaf-shaped rotors to make relative motion in the cylinder to compress and transport gas. It has a simple structure and is easy to manufacture. It is widely used in low-pressure gas applications such as aquaculture oxygenation, sewage treatment aeration, and cement transportation. Conveying and pressurizing systems, can also be used as vacuum pumps, etc.

Working principle

• The working principle of a Roots blower is to transport gas through the change in the volume of the working chamber formed when two rotors with an involute or similar shape rotate. Each rotor is functionally equivalent to a gear with two teeth. The end face of the impeller, the front and rear end covers of the fan, and the gas in the cylinder work together to achieve gas compression and transportation.

Main features

• ‌The impeller rotates without friction‌: The impeller of the Roots blower has no friction during operation and does not require lubrication.
• High efficiency and energy saving‌: The L-type Roots blower is a high-efficiency and energy-saving blower with a flow rate from 0.37-1000m³/min and a pressure rise up to 98KPa. It has strong passability of parts, high degree of standardization, reasonable structure, high efficiency and easy use. Steady and reliable.

How do roots air blowers work?

• Roots blower is a commonly used compressed air equipment. Its working principle is mainly realized by two counter-rotating Roots drums.
• The two Roots drums are connected through gear transmission or belt transmission.
• Each Roots drum is supported by a central bearing and has toothed blades at both ends of the bearing.
• When the Roots blower is running, the two Roots drums rotate in opposite directions, and the toothed blades mesh with each other.
• As the Roots drum rotates, the toothed blades gradually leave the suction side and move toward the exhaust side, forming a closed ‌ Sealed chamber.
• When the toothed blade moves from the suction side to the exhaust side, the volume in the sealed chamber gradually decreases, and the gas is compressed and gradually discharged in the high-pressure area.
• At the same time, during the exhaust stage, new gas enters the suction side through the inlet to prepare for the next round of compression and exhaust.

Structural features of Roots blower

• The structure of Roots blower mainly includes shaft, impeller and bearing. Its parts have strong passability, high degree of standardization, reasonable structure, high efficiency, and safe and reliable use. It is convenient for users to select, install and maintain equipment and spare parts. Its performance covers a wide range of flow rates from 0.37-1000m³/min, and the pressure rise can reach up to 98KPa.

Roots blower company

• Since its establishment in the early 1990s, Longgu Heavy Industry has become a diversified machinery enterprise integrating fan and pneumatic conveying equipment system engineering.
• Our company has advanced computer-aided design and manufacturing, CNC machining technology, and adopts information technologies such as computer-aided design and CAPPCT to improve product design and manufacturing accuracy and shorten the design and manufacturing cycle.
• Shandong Longgu Heavy Industry Machinery Co., Ltd. has imported advanced and high-precision machining equipment from many countries, including fully automatic machining centers, CNC boring and milling machines, and dynamic balancing instruments. It has a high-level, large-scale, and modern mechanical processing and manufacturing workshop.
• The company has completed the implementation and control of its internal quality management system, achieving independent quality control of products from research and development design to finished product delivery.
• It has established and improved a full process self-control system from design and production to quality, installation, and service, providing sufficient basis and reliable guarantee for the stability and durability of products.
• We have cooperated with higher education institutions such as Shandong University, Shandong University of Technology, and Southwest University of Technology to strengthen the research and development of key core technologies.
• We have overcome technical difficulties and developed new products such as diesel engine driven Roots blowers, water-cooled dual tank Roots blowers, and low-noise Roots blowers, filling multiple industry gaps.
• At present, our company's main products include LGSR three leaf Roots blower, LGSR-V Roots vacuum pump, LGSR-H high-pressure blower series, bipolar series high-pressure, gas pressurized explosion-proof, pneumatic conveying series fans, steam compressors, LGMJ dense series fans, rotary fans, centrifugal fans, etc.
• Our company's products are widely used in industries such as sewage treatment, pneumatic conveying, vacuum packaging, grain processing, electricity, petrochemicals, cement, mining, and special gas pressurized conveying.
• We have close cooperative relationships with top domestic enterprises such as Sande Group, COFCO Group, and Shanshui Cement. Our company's sales outlets and after-sales service centers are located throughout the country and exported to countries such as Malaysia, India, Kyrgyzstan, Nigeria, etc.

Roots blower diagram