What are the air compressor classification and description

There are many types of air compressors, which can be divided into two categories according to their working principles: positive displacement compressors and speed compressors. In the volumetric press, the increase in gas pressure is formed by the volume of gas in the sub-compression machine being reduced, resulting in an increase in the density of air molecules per unit volume. In speed compressors, the pressure of the air is converted from the speed of the air flow, that is, the air first obtains a high flow speed, and then a part of the speed energy is further converted into the pressure energy of the gas in the fixed element.

According to the structural type of the compressor, it can be classified as follows:

compressors used to compress air, in small and medium flow, the most widely used is the piston air compressor, in large flow, the most used centrifugal air compressor.

Classification of small and medium-sized piston air compressors:

small and medium-sized clear plug air compression machine according to its structure, often according to the following principles of classification, and according to the classification method of one or several named.

1. According to the division of the mutual beauty system of the air-to-wood axis distribution, the commonly used ones are L-type, V-type, W-type and bedroom type, vertical type, symmetrical balance type, etc. This section only introduces the widely used L,V type inertia force flat street performance better compressor.

2. The compressor cylinder central sleeve and the same gas cooling method are divided into two types: water cooling (water cooling) and air cooling (air cooling). Where continuous operation of the compressor is required and where the ambient temperature of the installation is high, the water-cooled type should be used, otherwise the air-cooled type can be considered.

3. Divided into single-stage, two-stage or multi-stage according to the number of compressions experienced by the compressed gas to the final discharge pressure. Generally, the low-pressure air pressure machine (discharge pressure 0.7~0.8MPa) is mostly two-stage, of which the smaller exhaust volume (<3m 3/min) and the lower exhaust pressure (<0.8MPa) adopt single-stage compression.

4. According to the type of prime mover that drives the compressor, it is divided into electric (motor drive) and diesel (diesel engine drive). In areas where there is a lack of power supply, the diesel type can be used.

5. The number of suction or exhaust times completed by the reciprocating piston of the cylinder is divided into single-acting type (the piston reciprocates to complete one suction and exhaust) and double-acting type, also known as single-acting and double-acting.

6. According to the lubrication method of the compressor transmission parts, it is divided into splash type and pressure type, and the cylinder part is divided into oil lubrication and oil-free hole slip. Generally, pressure lubrication is used for those with large displacement and continuous operation. Oil-free lubrication is suitable for production that requires compressed air to be free of oil pollution.

7. According to whether the compressor can move in use, it is divided into mobile and fixed.

8. In the product series, it is often divided into small, medium and large (divided by exhaust volume) and low pressure (exhaust pressure 0.7 ~ 0.8MPa gauge pressure) and medium and high pressure (exhaust pressure 1Mla gauge pressure) according to the exhaust volume or exhaust pressure. The representation of the product model has not been unified, and is generally expressed in the combination of the main indicators such as cylinder arrangement, exhaust volume and final exhaust pressure. For example, V-0.6/7 type indicates that the cylinder arrangement is V-shaped. The exhaust volume of the press is 0.6 m3/min, and the final exhaust pressure is 0.7MPa (gauge pressure).