What is the composition of the Roots blower?


Roots blower is a positive displacement fan, which is the membrane sound at the end of the impeller and the front and rear ends of the fan. The principle is a rotary compressor that uses two vane rotors to move relative to each other in the cylinder and compress the gas for delivery. The fan is simple in structure and convenient to manufacture, and is widely used in aquaculture oxygenation, sewage treatment aeration, cement conveying, gas conveying and pressurization systems suitable for low pressure conditions, vacuum pumps and other fields.

What is the structure of the Roots blower?

The Roots fan consists of five parts: shell, wall panel, impeller, fuel tank and muffler.

Shell: mainly for support (wall panel, impeller, muffler), fixation).

Wall plate: It is mainly used to connect the casing with the impeller, support the rotation of the impeller, and produce the end face sealing effect.

Impeller: The rotating part of the Roots blower is divided into 2 and 3 pieces, but the 3-piece blade has many advantages such as lower drawing pressure, lower noise and smoother operation than the 2-piece blade, and gradually replaced the 2-piece Roots blower.

Oil tank: It is mainly used to store the lubricating oil for lubricating gears and bearings.

Muffler: It is used to reduce the noise caused by the airflow pulsation when the Roots blower enters and exits.

What is the principle of the Roots blower?

The Roots fan is a positive displacement fan, in which the two three-blade impellers rotate relative to each other in the enclosed space between the shell and the wall panel. Since each impeller adopts the envelope of human bee or outer ring, the three blades of one impeller are identical, and the two impellers are also identical, which greatly reduces the difficulty of processing. The impeller adopts numerical control equipment during processing. Under the condition that the center distance of the two impellers remains unchanged, no matter where the two impellers are rotated, a certain distance can be maintained to ensure that the gas leakage is within the allowable range.

Because the gap between the impeller and the impeller, the impeller and the casing, the impeller and the wall plate is very small, the air inlet is in a vacuum state, and the air enters the intake manifold at atmospheric pressure. Then, the two blades of each impeller, the wall plate, and the outer casing form a sealed chamber, and the air in the air inlet continues to form a hole closed by the two blades while the impeller rotates. Therefore, pushing the air between the two blades to move continuously, and the air is continuously sent from the suction port to the exhaust port, is the overall working process of the Roots fan.

What are the characteristics of the Roots blower?

Due to the use of the three-blade rotor structure and the reasonable structure of the inlet and outlet in the box, the fan has low vibration and low noise.

The impeller and the shaft are integral structure, the impeller has no wear, the performance of the fan remains unchanged, and it can run continuously for a long time.

The fan has high volume utilization rate, high volume efficiency, small structure and flexible and diverse installation methods.

The models are complete and can be adapted to various uses of other users.

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