What is roots air blower

What is roots air blower

• Roots blower is a positive displacement blower. It mainly transports gas through the change in the working chamber volume formed by the rotation of two rotors with an involute or similar shape. This type of blower works similarly to a gear pump, with each rotor functionally equivalent to a two-tooth gear.

Main features of Roots blower

• 1.Simple structure and easy manufacturing: The design of the Roots blower is relatively simple and the manufacturing process is relatively easy.
• 2.Wide scope of application: It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transportation and other fields. It is also suitable for gas transportation and pressurization systems in low-pressure situations, and can even be used as a vacuum pump.
• 3.The air volume is proportional to the rotational speed: The air volume of the Roots blower is proportional to the rotational speed of the rotor, so the air volume can be controlled by adjusting the rotational speed.
• 4.Diverse transmission media: it can transport clean air, clean gas, sulfur dioxide and other inert gases, etc.
• 5.Lower vibration and noise: Compared with the two-bladed rotor, the three-bladed rotor has smaller gas pulsation and vibration, so the noise is also relatively low.

what is roots air blower

Roots blower structure and types

• Roots blowers can be divided into two-blade and three-blade types according to the shape of the rotor.
• During the operation of the three-blade rotor, the two rotors perform three suction and exhaust operations for each rotation.
• The gas pulsation is small, the vibration is small, and the noise is low.
• In addition, Roots blowers can also be divided into single-stage and double-stage series blowers according to the working mode; divided into vertical blowers, horizontal blowers, vertical shaft blowers, dense group blowers according to the structure; divided into labyrinth according to the sealing type Seals, expansion ring seals, packing seals and mechanical seals, etc.

Root blower working principle

• The working principle of the Roots blower is to separate the air inlet and exhaust port through the "meshing" of a pair of rotors.
• The rotors are driven by a pair of synchronous gears to rotate at a constant speed in opposite directions, and the inhaled gas is discharged from the air without internal compression.
• The suction port moves to the exhaust port, and the moment the gas reaches the exhaust port, it is pressurized and transported due to the return flow of high-pressure gas on the exhaust side. ‌‌
• Roots blower is a positive displacement blower.
• Its working principle is based on the relative movement of two blade-shaped rotors in the cylinder to compress and transport gas.
• This type of blower has a simple structure and is easy to manufacture.
• It is widely used in aquaculture oxygenation, sewage treatment aeration, cement transportation and other occasions.
• It is especially suitable for gas transportation and pressurization systems in low-pressure situations, and can also be used as a vacuum pump.
• There is a certain gap between the rotors of the Roots blower and they do not contact each other.
• This design allows the impeller to rotate without friction and does not require lubrication. Its operating temperature is usually not greater than 40°C.

Roots blower specifications

Roots blower diagram

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.