Oil filter introduction and classification

First, the introduction and classification of oil filter:

Filtration of solid impurities and moisture in oil to improve the performance of oil quality machinery and equipment. Filter units for removing solid impurities and moisture in impure oils by pressure filtration or vacuum evaporation-pressure filtration. The oil filter is mainly used to improve the insulation performance of the electrical oil and the purity of the lubricant. The oil filter unit is divided into structure type: plate and frame oil filter, high-precision oil filter, vacuum oil filter, regenerative oil filter, and centrifugal oil filter; with the effect of medium: oil filter, transformer oil filter Oil machine, anti-fuel oil filter.

The ordinary oil filter consists of a preliminary filter, an oil pump and a filter device. The initial filter is a cylindrical metal mesh that prevents the larger solid particles in the impure oil from entering the pump. Oil pumps are usually gear pumps that deliver impure oil into the filter unit. The filter device is a small hand-pressed frame filter press with dedicated filter paper as the filter medium. The impure oil enters the frame filter press under the pressure of the oil pump and passes through the filter paper to become the filter oil. The solid impurities in the oil are trapped on the surface of the filter paper, and a small amount of moisture is absorbed by the pores of the filter paper. The filtration pressure is usually not more than 0.3 MPa. When the surface of the filter paper deposits too much impurities, the filtration pressure rises to 0.35 MPa, or when the moisture absorbed by the filter is close to saturation and the residual moisture in the filter oil does not decrease, the filter paper should be replaced by shutting down. When the viscosity of the oil is high, it can be preheated to reduce the viscosity before filtration. This oil filter can only remove solid impurities and a small amount of water, and is suitable for the purification of general electrical oils and lubricants. When the oil contains too much water and impurities, it must be pretreated before being sent to the oil filter. Ordinary oil filter processing capacity of 25 to 200 liters / min. The square filter frame of the filter device has two kinds of frame lengths of 200 mm and 250 mm. Filter plates and filter frames are made of cast iron or polypropylene.

The vacuum oil filter includes a preliminary filter, a vacuum evaporation tank, an oil pump, a filter device, a condenser (ie, a condenser), and a vacuum pump. The impure oil enters the vacuum evaporation tank through the preliminary filter under the action of atmospheric pressure. When the oil is heated to above 100°C, it is sprayed into the vacuum chamber and becomes fine oil droplets. The moisture in the oil quickly evaporates into water vapor, which is discharged after entering the condenser. Uncondensed water vapor is vented to the atmosphere by a vacuum pump. The oil that has been collected at the bottom of the vacuum evaporation tank and has been dehydrated by evaporation is pumped by the oil into the filtration device to filter solid impurities in the oil and further absorb trace moisture. Vacuum oil filter can significantly improve the effect of excluding water from oil and is suitable for the purification of high pressure electrical oil.

The newly emerging molecular oil purifier also employs electrostatic separation and resin adsorption technology to remove deteriorating oil molecules, making highly purified insulating oils and improved insulation performance.

Uses: Used for reprocessing of high-precision lubricating oils such as unqualified hydraulic oil, lubricating oil, refrigerating machine oil, and anti-wear hydraulic oil.

Second, the oil filter oil pump oil filter oil pump: gear pump, screw pump and other screw pump: flow, pressure, stable, no pulse; conducive to the safe and stable operation of the oil filter oil filter commonly used screw pump type: 3G three screw pump, SN triple screw pump, HSN triple screw pump, 3GR triple screw pump, 2GH double screw pump, 2HM double screw pump, 2G double screw pump, 2W double screw pump.