Working principle of electrostatic spraying equipment for powder coating

After the electrostatic spraying machine of powder coating appeared in the market, it has been popularized and popularized all over the world, and this kind of equipment is more and more favored by people However, when this kind of high-pressure airless spraying machine is used, there will always be parts of the powder that are not fully utilized due to the discontinuity of the workpiece and the quality of the powder itself, as well as the impact of the stroke of the spraying equipment If this part of powder is not collected in time, it is easy to contaminate the environment If the waste powder is treated, it will be too wasteful If it is all used for reuse, it contains Many unusable waste powder will affect the coating quality In actual use, due to the influence of equipment manufacturing, technology and other factors, there are always some shortcomings in the recovery device Therefore, people have been looking for an ideal powder recovery system to solve the problem of powder recovery in the process of spraying equipment The device can be divided into four parts: suction section, separation section, filter section and discharge section The suction section is composed of a freely adjustable air plate, a regulating system and an air outlet Its function is to inhale the powder dust floating in the air or the unused powder into the separation system from the spraying equipment room to separate them The separation section of the spraying machine is composed of a cyclone separator, a filter screen and an inlet and outlet gas Its function is to mix the available powder into the original powder box and the original powder through a special cyclone separator device, and then enter the spraying equipment for circulation again, while the other part of the powder with small particles is charged because it is difficult to absorb electrons in the electric field of the spraying equipment If the waste powder is not separated in time and added to the original powder continuously, the amount of powder available in the original powder will be less and less, and the effective powder of the spraying equipment per unit time will be less and less, resulting in the thinner and thinner film thickness of the workpiece of the spraying equipment The powder and gas mixture from the separation section will enter the filter section, which is composed of filter chamber, waste powder collecting box and clean gas system At the same time, the pulse period and air flow intensity can be adjusted according to the actual production situation to achieve the best recovery effect Here, the filter element and pulse gas are more critical If the filter element is not good, it is easy to lead to unclean filtration, so that the discharged micro powder enters the atmosphere, which will affect the surrounding environment In serious cases, it will cause the local dust concentration to be too high, causing explosion Source: Huicong surface treatment network“