There are many types of air compressors, ranging from air pumps for cars and tractors to large air compressors for mining and mining, and their values range from a few thousand yuan to hundreds of thousands of yuan. How to select and purchase an air compressor not only involves how to set a reasonable budget, but also takes into account subsequent production and operation needs and maintenance costs. Therefore, if you want to choose the right air compressor, you must first understand these issues.

1. Exhaust pressure and exhaust volume

According to national standards, the exhaust pressure of general-purpose air compressors is 0.7MPa. If the pressure is higher or lower than this, it is a non-standard special air compressor. If the compressor used by the user is larger than 0.8MPa, it generally needs to be specially manufactured and cannot be forced to pressurize to avoid accidents. In addition, when selecting the exhaust volume, peak usage, normal usage and trough usage should also be considered. If the trough consumption is large, but the normal consumption and peak consumption are not large, the usual method abroad is to connect air compressors with smaller displacement in parallel to obtain a larger displacement, and start them one by one as the air consumption increases, so that Not only is it good for the power grid, but it also saves energy.

2. Gas use occasions

If the gas usage site is small (marine, vehicle), you should choose a vertical type; if the gas usage site changes over a long distance (more than 500 meters), you should consider a mobile type; if the usage site cannot provide power, you should choose a diesel engine-driven type. ; If there is no running water in the use site, you must choose the air-cooled type. When it comes to the two cooling methods of air cooling and water cooling, users often have misunderstandings, thinking that water cooling is better. In fact, this is not the case. Air cooling and water cooling have their own advantages and disadvantages, and users should decide based on actual needs.

3. Gas quality

Generally, the compressed air generated by an air compressor contains a certain amount of lubricating oil and a certain amount of water. In some cases, oil and water are prohibited. At this time, not only should you pay attention to the selection of the compressor, but also add additional accessories if necessary. Solution: First, choose a non-lubricated compressor. This kind of compressor cylinder can basically be 1005 oil-free. The second is to add a primary or secondary purification device or dryer to the air compressor (no matter what kind).

4. Operational safety

The air compressor is a machine that works under pressure. It is accompanied by temperature rise and pressure when working, and the safety of its operation must be given top priority. The state implements a standardized “two license” system for the production of compressors, namely a compressor production license and a pressure vessel production license (gas storage tank)

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