Movable low-pressure paint spraying machine

The utility model relates to a movable low-pressure paint spraying machine, which mainly externally structurally comprises a paint spraying host machine, an air guide plastic tube assembly with a larger inner diameter and a low-pressure paint spraying gun. A centrifugal high-pressure blower in the paint spraying host machine is driven by a high-speed direct-current motor to generate 0.035MPa-0.04 MPa air pressure, and the air pressure is cooled by a cooler and outputted outside the paint spraying host machine to be used for paint spraying. A spiral orbit plate is arranged between a cooling air outer tube and an air pressure inner tube of the cooler, cooling air for cooling is led in from the outside of the paint spraying host machine and blown in a tangent line between the cooling air outer tube and the air pressure inner tube, and air flow in quick rotation is formed on a spiral orbit and exhausted out of the paint spraying host machine from a cooling air outlet, so that cooling efficiency is improved. As pr