Air Compressor - common equipment for automobile painting

Air Compressor, referred to as Air Compressor or air pump, is a commonly used supporting equipment for automobile spraying. It is not only used for the supply of compressed air for various spraying, but also for the air supply of pneumatic tools such as pneumatic Grinders and pneumatic polishers.

There are many types and models of Air Compressors currently on the market. For example, according to the type of compressor, it is divided into three types: diaphragm type, piston type and rod type. In automotive painting, it is mainly a piston Air Compressor. There are two types of piston Air Compressors, mobile and stationary (Figure 1-3-13). The mobile compressor has the characteristics of small size, light weight, easy to move back and forth, easy to use and maintain. At the same time, the machine is equipped with safety devices (safety valve) such as automatic venting. If the gas production reaches the set air pressure, it can automatically stop. When the air pressure exceeds the specified pressure, the safety valve will automatically vent to ensure safety. Air supply equipment commonly used in car refurbishment. Stationary compressors are mainly used in automobile painting companies or factories, and cannot be moved back and forth. They are mostly used for gas supply equipment for batch painting.

The air pressure value (atmospheric pressure) unit of the Air Compressor's gas output is usually expressed in MPa (MPa). The normal atmospheric pressure is 0.1MPa (1 atmosphere). If the gas output is 5 (air pressure display), it is 0.5MPa. The air pressure commonly used in automobile spraying is 0.25-0.35MPa for small Spray Guns, 0.35-0.45MPa for large Spray Guns, and the air pressure for pneumatic tools usually requires 0.5-0.7MPa.

When the Air Compressor is used for spraying, it is also used in conjunction with the oil-water separator (air filter), so that the air produced by the compressor enters the filter through the air hose (referred to as the air rope), and the oil and water in the air are separated by the filter. After the impurities are filtered, the air pipe of the filter is supplied to the Spray Gun, so that the air used for painting is clean. However, tools such as pneumatics can generally be directly connected to the compressor for use.

During the use of the Air Compressor (including the filter), water should be released once every 4-6 hours, so that the moisture and oil and other impurities in the air bag can be discharged in time to ensure the cleanliness of the air.