The basic equation of filter filter is a mathematical model describing the filtration process. His differential form is related to instantaneous filtration rate, pressure gradient, filter cake structure characteristic value and filtrate property, and his integral form is with filtrate volume, total pressure drop, filter cake and filtration under the boundary conditions provided by the operating conditions. Liquid characteristics, filtering time, filter process design, operation control, process strengthening and proportional amplification are all based on the basic filtration equation. The establishment and treatment of a correct mathematical model is often inseparable from the understanding of the basic physical phenomena of the process. Therefore, the filter cake filtration must be established first. It is very important to analyze the mechanical characteristics of the ritual model and determine which rules can govern particle compression and flow friction.

1 when the field is used, the oil filter should be near the transformer or oil tank as far as possible, and the oil suction pipeline should not be too long, so as to minimize the resistance of the pipeline.

2 connection piping (including fuel tank) must be thoroughly cleaned and well sealed.

3 strictly follow the order of operation. When the oil filter is started, the vacuum pump, the oil pump and the heater should be operated normally and the internal circulation is good.

4 the purified oil contains a large amount of mechanical impurities and free moisture. The bottom water and impurities must be eliminated in advance, and then other filter equipment (such as centrifugal filter oil filter, pressure filter oil filter) can be filtered fully to meet the requirements of the vacuum oil filter, then the vacuum oil filter can be filtered to affect the life of the filter.

During the operation of 5, the working conditions of the oil filter (such as vacuum degree, flow rate, temperature, etc.) should be monitored regularly and the quality (breakdown voltage, etc.) before and after the oil disposal should be detected regularly to monitor the purifying effect of the oil filter.

The oil filter is a device that allows the unqualified oil to recover the new oil standard by filtering water, impurities, harmful gases and other substances.

The classification of oil filters is relatively simple. Generally speaking, we can divide them into three categories: insulation oil filter, lubricating oil filter and portable oil filter.

Insulation oil filter: mainly used for transformer oil filtering, insulation oil filter contains: Bipolar vacuum oil filter, high efficiency vacuum oil filter, regenerative insulating oil filter, insulating oil regeneration device, on load tap changer on-line oil filter equipment and so on.

Lubricating oil filter: mainly used for lubricating oil products of mechanical equipment. The lubricating oil filter consists of multi function compound vacuum filter machine, gear oil filter oil filter, hydraulic oil filter machine, refrigerated oil filter machine, diesel oil filter machine, turbine oil filter machine, heat treatment oil filter oil machine and so on.

Portable oil filter: the main function is to remove impurities, can not remove water, the market is mainly the cart type filter oil filter, plate and frame pressure filter oil filter, the hand type filter oil filter.