Novel air compressor

The utility model relates to the technical field of gas compressors, in particular to a novel air compressor, which comprises a crank case, a cylinder cover, a crank, a piston and a piston rod, bearings are arranged at the front end and the tail end of the crank on two sides of the crank and are supported on the crank case, and the front end of the crank is simultaneously connected with a belt pulley through a bolt and is sealed through a sealing cover. The piston slides in the cylinder cover and is connected with the piston rod through a pin shaft, the piston rod is matched with the crank, the belt pulley drives the crank to rotate to drive the piston to compress air, cooling fins are evenly distributed on the outer side of the cylinder cover, and the crank is provided with a fan-shaped balancing weight. An intake valve and an exhaust valve are symmetrically arranged at the top end of the cylinder cover; the included angle between every two adjacent piston mechanisms is 70 degrees. The utility model has the