The blower is mainly composed of the following six parts: motor, air filter, blower body, air chamber, base (and oil tank), drip nozzle. The blower operates eccentrically on the rotor offset in the cylinder, and changes the volume between the blades in the rotor slot to suck in, compress, and discharge air. During operation, the pressure difference of the blower is used to automatically send lubrication to the drip nozzle, and drip into the cylinder to reduce friction and noise, while keeping the gas in the cylinder from returning. This type of blower is also called a sliding vane blower. The conveying medium of the blower is mainly clean air, clean gas, sulfur dioxide and other inert gases. Other flammable, explosive, corrosive, toxic and special gases can also be produced and transported on demand. Therefore, it can be widely used in various industrial sectors such as metallurgy, chemical industry, fertilizer, petrochemical, food, building materials, petroleum, mine, textile, gas station, pneumatic conveying, sewage treatment and so on.