Blower Impeller 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 by the biased rotor in the cylinder, and makes the volume change between the blades in the rotor slot to suck in, compress and spit out the air. During operation, the pressure difference of the blower is used to automatically send the lubrication to the oil drip nozzle, and drip into the cylinder to reduce friction and noise, and at the same time, it can keep the gas in the cylinder from flowing back. This type of blower is also called a sliding vane blower.