Information on vacuum oil pumping and filtering machines

Vacuum oil filters are suitable for the degassing, impurity removal, water filtration, and purification of industrial oils such as transformer oil, turbine oil (steam turbine oil), lubricating oil, and hydraulic oil used in the power generation industry, electrical equipment manufacturing plants, paper mills, electrochemical plants, and various industrial and mining enterprises, as well as for the recycling of used oil. It overcomes the drawback of conventional vacuum oil filters, which are only suitable for removing water-containing oils, and is the most ideal specialized equipment for oil purification during operation. Working principle: The vacuum oil purifier is designed based on the difference in boiling points between water and oil. It consists of a vacuum heating tank, a fine filter, a condenser, a primary filter, a water tank, a vacuum pump, an oil discharge pump, and an electrical control cabinet. The vacuum pump extracts the air from within the vacuum tank to create a vacuum. Under the effect of atmospheric pressure, the oil enters through the inlet pipe and passes through a primary filter to remove larger particles; it then goes into the heating tank. The oil, which has been heated to 40–75°C, passes through an automatic oil level control valve, which regulates the amount of oil entering the vacuum tank in order to maintain a balance. The heated oil is separated into a semi-foggy state through rapid rotation of the nozzle blades; the water contained in the oil evaporates quickly into water vapor, which is then continuously drawn by a vacuum pump into the condenser. The water vapor that enters the condenser is cooled and subsequently converted back into water before being released. The oil inside the vacuum heating tank is pumped by an oil discharge pump into a fine filter, where particle impurities are removed through the filter elements. Thus, the entire process of quickly removing impurities, water, and gases from the oil in the vacuum oil filter is completed, allowing the clean oil to be discharged from the outlet outside the machine. A vacuum oil filter consists of several main components such as heating, filtering, vacuum creation, condensation, and adsorption regeneration. Components: heating system, filtration system, vacuum atomization system, oil supply system, and electrical control system. Due to the varying requirements of manufacturers, acid removal, decolorization, and adsorption units can also be added to vacuum oil filters. Instructions for use: Connect the oil inlet and outlet pipes, supply 380V voltage, connect the safety ground wire, check that all circuits are properly connected and that all oil circuit valves are open. Only after everything is in order should the operation procedure be carried out ； Start the vacuum pump briefly to ensure that the oil inside it functions properly, then run the vacuum pump continuously. When the vacuum level reaches the specified limit, the oil inlet valve can be opened. Once the oil level is visible through the viewing window in the vacuum cylinder, the oil discharge pump should be activated to remove impurities from the oil; once the oil circulation is normal, the heater switch should be turned on to evaporate any water present in the oil. If there is a large amount of water in the oil, foam will form in the vacuum cylinder, and at this point it is necessary to open the vent valve to maintain an appropriate vacuum level. The vent valve should be closed once the amount of water decreases and the oil level drops, so that the vacuum level reaches its optimal value. At this point, it is important to pay attention to the readings on the various instruments. If the pressure gauge reads more than 0.3 MPa, it indicates that there are too many impurities on the surface of the filter element inside the oil filter; in such cases, the surface filter paper needs to be removed. After the work is completed, refer to the schematic diagram to open the vent valve so that the vacuum level returns to normal atmospheric pressure. The oil remaining in the cylinder should be drained through the drain valve, thereby preventing different types of oil from mixing together during subsequent use. Precautions: 1. The power supply must be properly grounded before operation.  2. During operation, pay attention to the rotation direction of the motor, which should match the direction indicated by the arrow.  3. The heater must not be started without oil circulation; otherwise, it may be damaged, or in severe cases, an explosion could occur.  4. Before draining oil, all valves in the oil outlet pipeline must be opened.  5. It is not suitable for use when the operating environment temperature is below -30°C or above 40°C.