General classification of air compressor

Air compressor general classification has the following several categories:

1. According to the gas transmission volume, to put it bluntly, the gas transmission volume refers to the volume calculated from the gas discharged per minute during the operation of the air compressor to the suction situation. The small and medium-sized exhaust volume is below 10 cubic meters/minute, the small and medium-sized exhaust volume is 10~100 cubic meters/minute, and the large and medium-sized exhaust volume is above 100 cubic meters/minute.

Domestic models have 0.3, 0.6, 0.9, 1.6, 3, 6, 9, 10, 12, 20, 40, 60, 100 per minute of displacement. Among them, small servers and small and medium-sized enterprises account for a very large proportion. Extras above 100 are not common and are limited to specifications and net weight. Piston air compressors with displacement above 100 are unscientific.

2. According to the structure, it is divided into tube type, piston type and membrane type.

Among them, the screw compressor in the piston type and the tube type and the sliding built-in type are more common. China's piston accounted for 95% of production, while overseas screw compressors accounted for more than 90%, these three air compressors have their advantages and disadvantages.

Extruder screw air compressor because of the motor rotor type line complex, high manufacturing cost, but small size, light weight, small parts is its advantage. Under the condition of the same displacement, the screw compressor air compressor is much more expensive than the piston type, and its maintenance must have professional knowledge and work experience.

3. According to the cylinder axis and relative position, it is divided into vertical type, vertical type and viewing angle type, and the viewing angle type is divided into V type, W type, L type, etc.

Generally speaking, because piston air compressors are reciprocating equipment, they all have certain vibrations, and the viewing angle type can well balance their moment of inertia. Therefore, most large, medium and small piston air compressors are basically made of viewing angle type. Only the air compressors for vehicles and ships are limited by the land occupation. They are the founding type. The vertical type is the air compressor of bellows type. They are the products of industrial production generation. They have no advantages and are basically not manufactured now.

4, according to the refrigeration method:

because the air compressor can expand the temperature rise when the steam is reduced, it must be refrigerated in many ways. Generally, there must be a positive middle cooling tower for each level of reduction, so it is divided into water cooler and air cooler according to the cooling tower method. The water cooler is cooled by an open-loop system of drinking water; the air cooler is cooled by a cooling fan.

5, according to the transmission device is not the same classification:

there are motor drive method, diesel engine drive method. Large and medium-sized pneumatic type is equipped with power distribution box, diesel engine driver type is started by battery, and both air compressors have direct connection and side connection (I. e. synchronous belt drive).

6, according to the lubrication method:

the oil-free type, and the automobile engine oil-lubricating type, the latter is divided into splash type and mandatory type (that is, the oil-lubricating type provided by the gasoline pump and the fuel pump).