The blower is mainly composed of the following six parts: motor, air filter, blower body, air chamber, base (also used as oil tank) and oil drip nozzle. The blower operates eccentrically by the offset rotor 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 the lubrication to the oil drip nozzle and drop it into the cylinder to reduce friction and noise, while keeping the gas in the cylinder from backflow. This type of blower is also known as the sliding vane blower. The blower mainly transports clean air, clean gas, sulfur dioxide and other inert gases. It can also produce and transport other flammable, explosive, corrosive, toxic and special gases as required.