①Mechanical filter element blocking type: the price is cheap, the filtration precision is low, and the filter element is easy to block. For basic pumping unit refueling.
②Vacuum type: Using the principle of vacuuming to lower the boiling point of water, the effect of removing micro water is better, a large amount of free water and dissolved water in the oil is not easy to remove, and the removal of impurities also uses ordinary filter elements, which are easy to block, and the filtration accuracy is limited by hand filter elements . In addition, the power of the heater is too large, generally around 35KW, and the power consumption is large. It is generally suitable for the treatment of oil containing micro-water and less impurities such as transformer oil. Vacuum oil purifier, also known as vacuum high-efficiency oil purifier, oil purifier, vacuum oil purifier
It has the characteristics of small size, light weight, convenient movement, low noise, long continuous working time, stable performance and convenient operation. It is ideal for power plants, power stations, substations, electrical manufacturing plants, oil refineries, petrochemical and other industrial and mining enterprises to filter moisture, gas and impurity particles in transformer oil, turbine oil, engine oil below 40#, hydraulic oil and other oils. equipment. The main purpose
1. It can be used for on-site oil filtering and oil replenishment for various oil-immersed transformers, oil-immersed current and voltage transformers and high-voltage oil-less circuit breakers.
2. It can be used for on-site hot oil circulation drying of the above equipment, especially for the on-site hot oil circulation drying of oil-immersed current, voltage transformers and high-voltage oil-less circuit breakers.
3. It can be used for on-site vacuum oil injection and oil replenishment and equipment vacuuming for sealed oil-immersed equipment.
4. It can also be used to regenerate and purify slightly deteriorated transformer oil to make its performance meet the qualified oil standard.
5. It can also be used in power plants, power stations, power companies, substation industry, metallurgy, petrochemicals, machinery, transportation, railways and other industries.
main feature:
1. Small size and light weight.
2. Using vacuum to feed oil, a tubular rotary fuel injector is installed, which reduces resistance, speeds up the rotation speed, and increases the effect of oil and gas separation.
3. The function of regeneration and purification of metamorphic oil has been added, and the silica gel oil purification system has been added, and the silica gel purification oil and the impurity filtration are integrated into one. Make it meet the qualified oil standard.
4. There are two filtration methods for the oil purifier part: one is the traditional oil filtering method - filter paper is used as the filter medium; the other method is the special fine filter element that does not require filter paper as the oil filter medium.
5. One machine has multiple functions. When used on site, the original oil-carrying equipment is used as an oil storage tank to circulate the hot oil between the equipment, so that the three functions of oil filtering, regeneration and hot oil circulation and drying can be carried out at the same time. Save labor, save time, and indeed serve three birds with one stone.
4. Working principle
The vacuum oil purifier is designed according to the different boiling points of water and oil. It consists of a vacuum heating tank fine filter, a condenser, a prefilter, a water tank, a vacuum pump, an oil drain pump and an electrical cabinet. The vacuum pump draws out the air in the vacuum tank to form a vacuum. Under the action of atmospheric pressure, the external oil enters the primary filter through the inlet pipe to remove larger particles, and then enters the heating tank. After heating, the oil at 40~75 ℃ passes through. Automatic oil float valve, this valve is to automatically control the balance of oil in and out of the vacuum tank. The heated oil is separated into a semi-mist by the rapid rotation of the jet wing, and the water in the oil is rapidly evaporated into water vapor and continuously sucked into the condenser by the vacuum pump. The water vapor entering the condenser is cooled and then returned to the original water and released. The oil in the vacuum heating tank is discharged into the fine filter by the oil discharge pump to filter out the particulate impurities through the oil filter paper or filter element, so as to complete the vacuum oil filter quickly. The whole process of removing impurities, moisture and gas in the oil makes the clean oil drain out of the machine from the oil outlet.
③ Centrifugal oil filter: The effect of removing free water and large particles of impurities is better, but due to high-speed rotation, too much noise and low safety, it is basically not used now.
④Electrostatic oil filter: It uses the principle of electrostatic adsorption to remove non-metallic impurities such as metal and sludge. It has an open structure, no blockage, high filtration accuracy, and the ability to remove micro water is not as good as vacuum type. However, with the use of automatic temperature-controlled oil-water separator, it can not only remove water well, but also remove impurities better (the impurity particles are easier to separate from the oil after heating), mainly used for machine tool hydraulic station and hydraulic test The operating conditions that require high oil cleanliness.
⑤Magnetic oil filter: cheap, small structure, no power, generally used in hydraulic pipelines. However, the range of impurities it can purify and its purifying ability are limited.
⑥ Combination of various principles: The combination is designed for specific working conditions, but the structure is huge, the price and use and maintenance costs are high, and the effect is average.
