Vacuum drying machineIt has fast drying speed, high efficiency, and will not cause damage to the nutritional components of the product. It is mainly designed for drying heat sensitive, easily decomposable, and oxidizable substances, and can also be filled with inert gas inside, especially for some complex materials that can be quickly dried. At present, this device has been widely used for dehydration and drying of fruits and vegetables, food, health products, medicines, etc. Its drying quality is good and it is increasingly favored by users.
Introduced by a skilled worker,Vacuum drying machineMainly utilizing vacuum drying technology and achieving continuous feeding and discharging under vacuum conditions. Due to the low oxygen content during drying under low pressure, it can prevent the dried material from oxidizing and deteriorating.
At the same time, it can also vaporize the moisture in the material at low temperatures, especially suitable for drying heat sensitive materials. It is worth mentioning that vacuum drying is equipped with a recycling device, which not only facilitates the collection of important components in materials, but also recovers pollutants, making it an environmentally friendly type of "green" drying.
With the rapid development of the food industry and the country's emphasis on energy conservation and environmental protection of food equipment, coupled with consumer upgrades, people's demand for healthy, nutritious, and safe food continues to increase, providing a good development opportunity for vacuum dryers. Indeed, although vacuum drying equipment plays an important role in the food drying process with its many advantages. However, users need to pay attention to some issues when operating a vacuum dryer.
evacuate
Users need to evacuate before use, then heat up and operate the equipment. According to industry insiders. If the temperature is raised first and then evacuated, it may cause a decrease in the efficiency of the vacuum pump. Because the heated air is pumped away by the vacuum pump, the heat is inevitably carried to the vacuum pump, resulting in excessive temperature rise of the vacuum pump. Furthermore, due to the vacuum sealed state,Vacuum drying machineWhen working, if heated first, the gas will heat up and generate huge pressure, which may lead to explosion, which is a potential danger.
Explosion proof and corrosion-resistant
It is understood that the vacuum dryer should be used in an environment with a relative humidity of ≤ 85% RH and no corrosive gases present in the surrounding environment. It should be noted that due to the lack of specialized explosion-proof and anti-corrosion treatment in the working chamber of the vacuum double cone rotary vacuum dryer, in order to ensure the safety of equipment operation and prolong the service life of the equipment, users should not put materials that are prone to natural, explosive, or corrosive gases, in order to prevent the normal operation of the equipment in the future.
Do not work for long hours
Generally speaking, vacuum pumps cannot work for a long time. Therefore, when the vacuum degree reaches the requirements for drying materials in a vacuum dryer, the vacuum valve should be closed first, and then the power supply of the vacuum pump should be turned off. When the vacuum degree is lower than the material requirements of the vacuum drying equipment, the vacuum valve and power supply of the vacuum pump should be turned on to continue vacuuming. This is beneficial for extending the service life of the vacuum pump and saving users from replacing the vacuum pump to a certain extentVacuum drying machineThe investment cost.
Sampling requires opening the air valve
Generally speaking, vacuum dryers require sampling during operation to check the drying status of materials or analyze them for better subsequent processes. When sampling, it is necessary to turn off the vacuum pump, open the vacuum pipeline valve, and then open the vent valve on the vacuum system to allow gas to enter the equipment, and temporarily suspend the operation of the main engine. Among them, samples can be taken according to processing needs. After sampling, the device can be restarted.
Compared with traditional vacuum dryers, as a drying equipment, vacuum dryers have obvious advantages and broad market prospects. Vacuum drying machines not only improve material drying efficiency and ensure drying quality, but also have the characteristics of green environmental protection, which conforms to the green environmental protection requirements advocated by the country. However, users still need to pay attention to some issues during operation to ensure the safety of using the vacuum dryer.