Jet mill (jet mill) is an important equipment of superfine grinding, especially widely used in non metallic minerals and chemical raw materials of ultrafine grinding, solid content of products depends on the size limit of mixed gas stream, and inversely proportional to the unit energy consumption. In addition to fine particle size, the airflow pulverization product has the characteristics of narrow particle size distribution, smooth particle surface, regular particle shape, high purity, high activity and good dispersion. The compressed gas adiabatic expansion of Joule Thomson cooling effect in the grinding process, so it is also suitable for low melting point, heat sensitive materials of superfine grinding. Therefore, the requirements for the air compressor has become increasingly apparent, air mill (air mill) with the advantages of air compressor will be highlighted.

A lot of air compressors have run out of oil, in the actual process, found that most of the complaints are not caused by the quality of the oil problem. So, in addition to oil quality problems, what are the reasons leading to oil run? Our air compressor engineers in practice summed up a number of situations will also lead to the reasons for running oil, and below to share with you.

The air compressor is the main part of the air source device. It is the device that converts the mechanical energy of the prime mover (usually the motor) into the pressure energy of the air. It is the pressure generating device of compressed air.

Adjust according to the specific use environment and operating conditions. Generally, manual ball valves need to be used for regular discharge of condensate at the drain port, and automatic drains need to be regularly checked for the integrity of the self-draining function.         The frequency of drainage or inspection mainly depends on the humidity of the inhaled air (season and environment, the humidity is higher and more frequent) and the outlet temperature of the air compressor (higher temperature needs to be more frequent).

Adjust according to the specific use environment and operating conditions. Generally, manual ball valves need to be used for regular discharge of condensate at the drain port, and automatic drains need to be regularly checked for the integrity of the self-draining function.         The frequency of drainage or inspection mainly depends on the humidity of the inhaled air (season and environment, the humidity is higher and more frequent) and the outlet temperature of the air compressor (higher temperature needs to be more frequent).

There are roughly three levels of moisture removal in the exhaust of an air compressor: 1. Air compressor body         The air compressor body should be equipped with a gas-water separation device, try to remove part of the liquid water in the air compressor body. Some small or some simple air compressors do not have this function. If this device is missing or the device fails, the removal of moisture in the compressed air will have to be borne by the back-end water removal equipment, which may cause overload. Second, the air compressor pipeline and daily         The gas storage tank, filter and the end of the pipeline on the air compressor pipeline are several important drainage points. Especially the gas storage tank is the most convenient and critical.         At present, in addition to the manual ball valve device for draining water, the automatic draining device has also been widely used. But regardless of manual or automatic drainage, daily operation and maintenance and inspections are still the most important. 3. Special water removal equipment         The specialized dewatering equipment for the compressed air system mainly includes: pipeline air-water separation device, refrigerated dryer, adsorption dryer, precision filter, etc., which can be reasonably configured according to the gas demand.

It is impossible and unnecessary to completely remove the water in the compressed air, as long as we reach the dryness we want.         Generally, for most general compressed air applications, such as driving cylinders, purging, pneumatic tools, etc., as long as the air end does not contain liquid water at the current ambient temperature.         For some demanding occasions, such as spraying, textiles, electronics, food and medicine, etc., each has its own requirements for the moisture in the compressed air.

We all know that the "humidity" of the air refers to the dryness of the air, that is to say, the air already contains water.        The air compressor does not produce water, but acts as a “porter” of water in the process of compressing air. Air in the natural state is compressed or cooled, and it will tend to be saturated until it is supersaturated. Water in the air will precipitate and change from a gaseous state to a liquid state, and water is thus produced. Why is there water in the exhaust of the air compressor?        For compressed air systems, compression is the purpose, and cooling starts to run through after compression.        When the air compressor is working, because the gas is compressed to release a lot of heat, the internal temperature of the compressor head is very high (about 100°C). The moisture in the natural air that is inhaled will form water vapor during the compression process of the air compressor and be discharged with the compressed air.         Generally, the air compressor unit is equipped with an air cooler to force the compressed air to be discharged from the air compressor to forcibly reduce the temperature. The purpose is to use the cooling and condensation effect to remove a part of the water in the compressed air.        This is still the case when the air compressor itself has a sound cooling and drainage function, otherwise, the compressed air and water will flow to the back-end pipeline together.        Even if the drainage function of the air compressor body is normal and there is no liquid water at the outlet of the air compressor, the compressed air discharged is still saturated. With only a little cooling, liquid water will still condense in the compressed air.        The "Hui Nantian" in the south intuitively illustrates the formation of water. When warm and humid air encounters a lower temperature surface, such as floors, walls, etc., water droplets will condense on the surface.        In the compressed air system, there are various pipes, air storage tanks, filters, etc. at the outlet of the air compressor. The temperature of these objects is lower than that of the discharged compressed air (generally, the exhaust temperature of the air compressor is the ambient temperature. Above 10°C), this will inevitably condense a lot of water.        Especially in the gas storage tank, when the compressed air passes through the gas storage tank, the high-speed airflow hits the wall of the gas storage tank to generate confluence, and the temperature in the gas storage tank drops rapidly, so that a large amount of water vapor is liquefied to form condensed water . If it catches up with humid weather (inhaled air itself with high humidity) or winter (the ambient temperature is low, and the temperature difference with the air compressor exhaust is greater), more condensate will be formed.        Therefore, the drainage of air storage tanks is usually emphasized by almost all air compressor manufacturers. The "bottom in and top out" method of the inlet and outlet pipes of the gas storage tank also considers the possibility of water storage at the bottom of the gas storage tank to prevent liquid water from flowing to the rear with the airflow. More often).