Pollution-free double-stage oil-water separation diesel oil filter

Abstract

The invention discloses a pollution-free double-stage oil-water separation diesel oil filter. The filter comprises a filter seat (1), a housing (5), a filter core assembly (3), a water collecting cup (8), a sealing ring and an air bleed valve (16), and is characterized in that a flow guide vane (2) is sleeved in the filter seat; the upper part of an upper end cover (14) of the filter core assembly is sleeved on an oil outlet channel in the filter seat; a disc type spring (6) is arranged at the lower end of a lower end cover (11); the edge of the disc type spring is embedded in a positioning groove at the internal lower part of the housing; a support frame (12) is sleeved between the upper end cover and the lower end cover of the filter core assembly; a folded filter paper (3) is sleeved outside the support frame; an organic fluorine layer is additionally coated on an oil inlet surface of the filter paper; the upper end of the housing is connected with the filter seat through looseness-proof screw threads, and the lower end of the housing is connected with the water collecting cup through looseness-proof screw threads; and a water drain valve (10) is arranged at the lower part of the water collecting cup. The filter has the advantages that the service life of filter core capable of efficiently separating oil and water can be prolonged, only the filter core assembly needs to be replaced during maintenance, and waste filter cores can be treated in a pollution-free manner, so that the emission of hydrocarbons is effectively reduced and metal materials are saved.

Description

technical field [0001] The invention relates to a diesel filter, in particular to a pollution-free two-stage oil-water separation diesel filter. Background technique [0002] As we all know, in order to increase power and meet strict emission standards, almost all diesel engines of modern automobiles are supercharged, intercooled and adopt electronically controlled high-voltage co-regulation technology. Therefore, the most taboo of the fuel supply system of modern diesel engines is that the diesel oil contains water. The latest research shows that when the water is sprayed from the nozzle hole and encounters the high-temperature gas in the cylinder, its volume expansion will reach 1600 times, which is equivalent to an explosion. Even if the water is still at the end of the nozzle hole, the expansion rate of the water will Also has an explosive effect. It often causes the plastic deformation of the nozzle hole, which deteriorates the fuel supply quality of the diesel engine...

AI Technical Summary

Problems solved by technology

It often causes plastic deformation of the nozzle hole, which deteriorates the fuel supply quality of the diesel engine, leads to out-of-control combustion, and exceeds the emission standard

The oil-water separation performance of the existing diesel oil filter mainly relies on the filter paper treated with organic silicon, and the oil-water separation is carried out through its water-repelling and oil-friendly functions, but its service life is too short. According to SAE J1839 in the laboratory -1997 test method to test, the general high-efficiency oil-water separation time is only 1 to 1.5 hours, after that, the efficiency of water separation drops sharply

At the same time, the filter element of the existing spin-on diesel filter is all canned, and there is a tank of oil taken away every time the filter element is replaced, and these oils will eventually be released into the atmosphere in the form of hydrocarbons to pollute the air

In addition, when replacing the filter element, the steel tank body, spring, and threaded cover of the tank filter element are difficult to carry out pollution-free treatment, which not only pollutes the environment but also causes a great waste of steel resources and many other problems

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