How to maintain the middle vacuum pump of vacuum packaging machine
Vacuum packaging machine is mainly composed of five parts: upper working room, lower working platform, frame, electrical system and vacuum system.
Working process: first, close the cover and pump air from the working room. When the predetermined vacuum degree is reached, the vacuum pump stops working. When the pressure valve is opened, the air bag is inflated, and the pressure strip is pressed down on the seal. At the same time, the hot seal is electrified and heated. A few seconds later, the hot seal is powered off. After heating, the pressure strip continues to press on the seal and cooled for 2-3 seconds. The air release valve is electrified and opened to let the air enter the working room Inside, automatically open the cover and complete a working cycle.
The main function of vacuum packaging is to remove oxygen, which is helpful to prevent food deterioration. Its principle is also relatively simple. Due to the activity of microorganisms, most microorganisms (such as molds and yeasts) need oxygen for their survival, and vacuum packaging is to use this principle to pump out the oxygen in the packaging bag and the food cells, so as to lose the micro objects“ Living environment ".
In addition to inhibiting the growth and reproduction of microorganisms, another important function of vacuum deoxidization is to prevent food oxidation. Due to the presence of a large number of unsaturated fatty acids in oil food, it is oxidized by oxygen to make food taste and deteriorate. In addition, oxidation also makes vitamin A and C loss, and the unstable substances in food pigment are oxidized to make the color dark. Therefore, deoxidization can effectively prevent food deterioration and maintain its color, fragrance, taste and nutritional value.
The main function of vacuum inflatable packaging is not only the function of deoxidization and quality guarantee, but also the function of pressure resistance, air blocking and fresh-keeping, which can effectively keep the original color, fragrance, taste, shape and nutritional value of food for a long time. In addition, there are many foods that are not suitable for vacuum packaging and have to use vacuum inflatable packaging. Such as crunchy and fragile food, easy to agglomerate food, easy to deform and take oil food, food with sharp edges and corners or high hardness that will puncture the packaging bag, etc. After the food is packed in vacuum, the air pressure inside the bag is greater than that outside the bag, which can effectively prevent the food from being broken and deformed under pressure without affecting the appearance of the bag and the printing decoration.
When we use the vacuum packaging machine, we must pay attention to the maintenance of its vacuum pump, but there are many ways of maintenance, we still need to find out the most effective. When we buy the vacuum packaging machine, we will be involved in the after-sales problem of the vacuum packaging machine, which is also an important reference for the production enterprises. Why do we need to maintain the vacuum packaging? The purpose of maintenance is to better use the vacuum packaging machine, and how to make the vacuum packaging machine more effective use. This requires better maintenance and repair of the machine to ensure the normal operation of the machine.
The purpose of repair and maintenance is to ensure the reliability of equipment operation, that is, to ensure the reliability of use value, and to make the maintenance cost the least. In order to optimize the maintenance decision, we should first choose a reasonable maintenance mode. In fact, the popular point is that we should do a good job in the daily maintenance of the vacuum packaging machine. It is that the equipment is not affected too much by the outside world and use, which causes the equipment degradation in advance and reduces the production efficiency. As the official said, even if we repair it, it will cost us money, and it will also delay the production and use, which is a waste of time and money.
If we can according to the vacuum packaging machine requirements of regular care and maintenance, change the vacuum pump oil. Especially the vacuum pump is very important for a vacuum packaging. Once the pump is damaged, it will be irreversible and the maintenance cost is very high. Therefore, it should be said that the equipment is damaged because of the loss in the process of use, but if we neglect the management and maintenance at ordinary times, it will also cause the damage of the vacuum packaging machine. The maintenance is not the final good way, and the maintenance is the good protection of the vacuum packaging machine.
In a word, if you only need to maintain the vacuum pump of the vacuum packaging machine according to the above content, you don't need to worry about its performance.