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Mingfeng Machinery explains the principle of the Roots blower.
Release time:
2022-06-22
Roots blowers belong to positive displacement rotary blowers, with the main power sources being electric motors, diesel engines, or a combination of both. The main parameters for selection include air volume, pressure, speed, and motor power. A typical three-lobe Roots blower mainly consists of two parts: the drive motor and the blower head. The drive motor is the power source for the blower, which can be either an electric motor or a diesel engine, while the blower head is the main working component of the Roots blower. It operates in a regular manner to achieve the purpose of gas transportation. To understand the working principle of the Roots blower, one must have a thorough understanding of the structure of the blower head. The main components of the blower head include: wall plates, casing, driving impeller, driven impeller, driving and driven gears, main and auxiliary oil tanks, bearings, etc. The Roots blower has two impellers that rotate in opposite directions under the drive of the motor. When the impellers pass the intake port, a sealed chamber is formed between the two impellers and the wall plates and casing. As the impellers continue to rotate, the air inside the sealed chamber is compressed and expelled through the exhaust port. This process repeats, transporting external air to the destination through the intake and exhaust ports. There are certain gaps between the impellers, between the impeller and the wall plates, and between the impeller and the casing. These gaps have fixed standards and tolerances; if the tolerances are too large, it can lead to other corresponding failure issues. When the impeller passes the exhaust port, under the pressure in front of the pipeline, some gas will leak to the outside through the gaps. This type of leakage is referred to as internal leakage. Since the Roots blower is a positive displacement blower, once it starts operating, the air volume will not change significantly. Even with slight changes in front pressure, it can continue to transport air. After long-term use, the air volume of the Roots blower may change, usually decreasing. The main reasons for this are changes in the gaps between the impellers, between the impeller and the wall plates, and between the impeller and the casing, which increase internal leakage and subsequently affect the air volume of the Roots blower. To ensure the normal operation of the Roots blower, other components of the blower also play a very important role, such as bearings and gears. If the cooperating components experience abnormal failures, it will also greatly impact the operation of the blower. Therefore, in later maintenance, not only should important components be meticulously maintained, but other cooperating components should also be regularly serviced!
Roots blowers belong to positive displacement rotary blowers, with the main power sources being electric motors, diesel engines, or a combination of both. The main parameters for selection include air volume, pressure, speed, and motor power. A typical three-lobe Roots blower mainly consists of two parts: the drive motor and the blower head. The drive motor is the power source for the blower, which can be either an electric motor or a diesel engine, while the blower head is the main working component of the Roots blower. It operates in a regular manner to achieve the purpose of gas transportation. To understand the working principle of the Roots blower, one must have a thorough understanding of the structure of the blower head. The main components of the blower head include: wall plates, housing, driving impeller, driven impeller, driving and driven gears, main and auxiliary oil tanks, bearings, etc. The Roots blower has two impellers that rotate in opposite directions under the drive of the motor. When the impellers pass through the intake port, a sealed chamber is formed between the two impellers and the wall plates and housing. As the impellers continue to rotate, the air inside the sealed chamber is compressed and expelled through the exhaust port. This process repeats, transporting external air to the destination through the intake and exhaust ports. There are certain gaps between the impellers, between the impellers and the wall plates, and between the impellers and the housing. These gaps have fixed standards and tolerances, and if the tolerances are too large, it can lead to other corresponding failure issues. When the impeller passes through the exhaust port, under the pressure in front of the pipeline, some gas will leak to the outside through the gaps. This type of leakage is referred to as internal leakage. Roots blowers belong to positive displacement blowers.
Therefore, once in operation, the air volume basically does not change. Even with slight changes in front pressure, air transportation can continue. After long-term use, the air volume of the Roots blower may change, mostly decreasing. The main reasons for this are changes in the gaps between the impellers, between the impellers and the wall plates, and between the impellers and the housing, which increase internal leakage and subsequently affect the air volume of the Roots blower. To ensure the normal operation of the Roots blower, other components of the blower also play a very important role, such as bearings and gears. If the cooperating components experience abnormal failures, it can greatly impact the operation of the blower. Therefore, in later maintenance, not only should important components be meticulously maintained, but other cooperating components should also be regularly serviced!
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