What if there is more water vapor in the air compressor

What if there is more water vapor in the air compressor

many friends who use air compressors will encounter a headache, that is, there is a lot of water vapor in the air discharged from the machine. Sometimes the drain valve of the gas tank is opened, and all that flows out is water. What the hell is going on and how to solve it.

First, let's talk about how the water vapor comes from. When the air compressor is working, it will suck in the outside air and then compress it hard. After the air is compressed, the water vapor inside will turn into small water droplets, just like we will see water mist when we breathe into the glass in winter. The more compressed, the more water drops. In addition, if the air on the other side of the air inlet is very humid, such as the rainy day in the south, the water content of the air sucked in is large, and the water discharged will naturally be more. Another situation is that there is a problem with the cooling system inside the air compressor. The place where the heat should be taken away did not take away the heat, and the moisture in the air could not be separated into water droplets. As a result, all of them followed the compressed air. Run out.

What trouble can water vapor bring. The most direct is the use of gas equipment prone to problems. The area of water in the air pipe will rust over time, and the rust will block the air pipe and valve. If there is water in the spray gun, the spray will be uneven and the quality of work will be greatly reduced. If it is to the food or drug-related processes of gas supply, water vapor may carry bacteria, it is even more troublesome. Therefore, the matter of water vapor is insignificant, but it actually has a great impact.

Then how to solve it. The simplest and most commonly used method is to install an automatic drain under the gas tank. The bottom of the gas tank is the lowest place, the water droplets will naturally sink to the bottom, and the drain will automatically drain the water regularly without manually twisting the valve every day. This method does not cost much, the effect is good, in most cases can solve the problem.

The second way is to install drying equipment. The role of the dryer is like a big sponge, specifically to absorb the moisture in the compressed air. There are two common types of freeze dryer and adsorption dryer. The principle of freezing is to reduce the temperature of the air again, so that all the remaining water becomes water droplets and is discharged. Adsorption is the use of special materials to hold the moisture firmly. After the dryer is installed, the air comes out much drier.

The third way is to check and maintain the cooling system. The air compressor generates a lot of heat when compressing air, and the heat needs to be dissipated by the cooling system. If the cooler is blocked or the fan does not turn, the heat cannot be dissipated and the water cannot be separated cleanly. Regularly clean the cooler, check the fan and heat sink, can reduce the generation of water vapor from the source.

In addition, the location of the air inlet is also exquisite. Try to put the air compressor in a dry and ventilated place, not in a damp corner or basement. If there is really no way, you can add a pipe in front of the air inlet to lead the air inlet to a place with better air.

Speaking of which, I have to mention the water lubricated air compressor. Ordinary air compressor in the internal use of oil to lubricate the parts, oil and water mixed together will become emulsion, not only affect the lubrication effect, but also let the exhaust air which contains oil and moisture, processing more trouble. The water-lubricated air compressor uses water instead of oil for internal lubrication, and the discharged compressed air itself does not contain oil, only moisture needs to be treated. In this way, the subsequent drying and filtering work is much simpler, and there is no need to worry about a series of problems caused by the mixing of oil and water.

When the water-lubricated air compressor outputs air, because there is no oil interference, the separation of moisture is easier. Water droplets are more likely to gather and become larger without oil film wrapping, and then deposit at the bottom of the gas storage tank and drain away smoothly through the drain. So in a sense, the water lubricated air compressor in the control of the water content of the air, than the traditional oil lubricated air compressor to worry about some.

Of course, the water lubricated air compressor does not mean that it will not produce water vapor at all. After all, as long as the air is compressed, moisture will certainly appear, this is the law of physics, no one can change. However, the water-lubricated air compressor makes the whole system cleaner, the difficulty of subsequent treatment of water is also reduced, and maintenance is easier.

To sum up, the water vapor of the air compressor is mainly caused by the condensation of water after the air is compressed. The solution is to install a drain, add a dryer, maintain the cooling system, and improve the intake environment. If the air quality requirements are relatively high, you can consider replacing it with a water-lubricated air compressor to reduce the interference of oil from the source and make the treatment of water vapor simpler and more efficient.