The compressor is directly driven by the motor to cause the crankshaft to generate a rotational motion, and the booth rod causes the piston to reciprocate, causing the cylinder volume change. Due to the change in cylinder pressure, air passes through the air filter (muffler) into the cylinder through the air filter (muffler), in the compression stroke, due to the reduction of the cylinder volume, the compressed air passes the exhaust valve, via the exhaust pipe, single When the valve (check valve) enters the gas storage tank, and automatically stops when the exhaust pressure reaches the rated pressure 0.7 MPa.