25bar 1000cfm 30m3/min mining air compressor Cummins 25 bar 1000 cfm diesel engine screw compressor for water well drill rig

According to the different ways of compressing gas, air compressors are usually divided into two categories, one is positive displacement compressors, and the other is dynamic compressors.

Positive displacement compressors: including reciprocating compressors (piston compressors, diaphragm compressors) and rotary compressors (screw compressors, vane compressors, scroll compressors, synchronous rotary compressors, etc.) .

Dynamic compressors: including jet compressors and turbo compressors (centrifugal compressors, axial compressors).

Features of piston air compressor:
1. The applicable pressure range is wide, and the required pressure can be achieved regardless of the flow rate. At present, it can reach 3500×105Pa in industry and 10000×105Pa in the laboratory;
2. Strong adaptability, that is, a wide range of displacement, and is not affected by the pressure level. For example, the maximum exhaust volume of a single machine can reach 500m³/min, and the minimum can be very small. And when the air volume is adjusted, the exhaust pressure is almost unchanged;
3. The speed is not high, and the machine is large and heavy;
4. The structure is complex, there are many wearing parts, and the maintenance volume is large (but the technical requirements for the maintenance workers are correspondingly low);
5. The exhaust is discontinuous, causing airflow pulsation.

Features of screw air compressor:
The screw of a single-screw compressor usually has 6 screw grooves, and each star gear tooth divides it into two spaces, upper and lower, which respectively realize the working process of the compressor. Due to the two star wheels, the single-screw compressor is equivalent to a six-cylinder double-acting piston compressor. In addition to the characteristics of rotary compressors such as simple structure, small size and no air valve wearing parts, single-screw compressors also have many unique advantages. These advantages are mainly due to the symmetrical arrangement of the two star wheels on both sides of the screw.