Roots blower is a positive displacement blower with impeller end face and front and rear end cover of the blower. The principle is a rotary compressor that uses two blade-shaped rotors to move relative to each other in the cylinder to compress and deliver gas. This kind of blower is simple in structure and convenient to manufacture. It is widely used in aquaculture aeration, sewage treatment and aeration, cement conveying, and is more suitable for gas conveying and pressurizing systems in low pressure occasions, and can also be used as a vacuum pump.
Roots blower is a type of positive displacement blower. There are two three-blade impellers that rotate relative to each other in the space sealed by the casing and the wallboard. Because each impeller adopts an involute or outer cycloid envelope The three blades of each impeller are exactly the same, and the two impellers are also the same, which greatly reduces the processing difficulty. The impeller is processed with numerical control equipment to ensure that the center distance between the two impellers is constant, no matter where the two impellers rotate, a certain minimum gap can be maintained, so as to ensure that the gas leakage is within the allowable range.
The two impellers rotate towards each other. Because the gap between the impeller and the impeller, the impeller and the casing, and the impeller and the wall plate is extremely small, the air inlet forms a vacuum state, and the air enters the air inlet cavity under the action of atmospheric pressure, and then, Two of the blades of each impeller form a sealed cavity with the wall plate and the casing. The air in the inlet cavity is continuously brought to the exhaust cavity by the sealed cavity formed by the two blades during the rotation of the impeller. The impellers in the air cavity mesh with each other, thereby squeezing the air between the two blades, so that the continuous operation, the air is continuously transported from the air inlet to the air outlet, this is the Roots blower The whole work process.
