The main components of a polyurethane spray machine are as follows

Spray gun: Responsible for ejecting the polyurethane coating, typically consisting of a nozzle, nozzle cap, nozzle throat, and trigger.

Coating chamber: Provides a sealed environment to maintain the stability of the spraying process, preventing external impurities from entering. It is usually made of metal or plastic.

Compressed air system: Provides compressed air for spraying, controlling the uniformity and intensity of the spray through air pressure. It includes a compressed air source, air hose, and pressure regulator.

Coating supply system: Responsible for delivering the polyurethane coating to the spray gun, typically consisting of a coating container, pump, pipes, and filters.

Control system: Used to control the entire spraying process, including adjusting the spraying pressure, spraying speed, and spraying mode. It generally consists of a control panel and electrical components.

Auxiliary equipment: Such as air filters, pressure gauges, temperature and humidity meters, etc., used for monitoring and adjusting the spraying process.

These are the main components of a polyurethane spray machine, and different models may have additional auxiliary equipment or functions.