Circulation Filtration Fuel Filter

Abstract

The invention discloses a circulating filter fuel filter. An annular flow channel is arranged on the upper sealing cover, and an oil material inlet hole is arranged in the annular flow channel to communicate with the space between the housing and the main filter element. The oil material inlet hole is formed in the annular flow channel. Arranged in a circular array, the annular flow channel is connected with an oil pump interface and a circulation inlet; the axial center of the upper seal cover is provided with a cavity extending to the hollow interior of the main filter element, and the lower part of the cavity is provided with an opening, which radiates to the surrounding The circular flow channel of the circular array, the inner end of the circulating flow channel communicates with the cavity, the outer end of the circulating flow channel communicates with the space between the shell and the main filter element, and a hollow cylindrical auxiliary filter element is arranged in the cavity, and one end of the auxiliary filter element is connected with a seal The other end is connected with a ring-shaped sealing piece, and the lower sealing cover is provided with a lower end cover covering the circulation channel, the sealing plug is at the inner end of the cavity, the sealing piece is pressed on the lower end cover, and the lower end cover is provided with a hollow filter core. The circulation outlet of the position is connected, and the resistance and pressure loss of oil flow are low.

Description

technical field [0001] The invention relates to an automobile fuel filter, in particular to a circulating filter fuel filter. Background technique [0002] With the vigorous development of the domestic automobile industry, the number of automobiles is increasing day by day, people's understanding of automobiles is gradually improving, and the maintenance and maintenance of automobiles are getting more and more attention. Fuel filters are one of the more frequent maintenance items. It needs to be replaced once every few days. The main thing that affects its service life is that the quality of domestic oil products is uneven and there are many impurities. The fuel filter is an essential part to ensure that pure fuel is provided for engine combustion. Its internal structure is mainly composed of a filter element, and the filtered impurities are deposited on or near the filter element. All the impurities flow to the surface of the filter element, which virtually increases the r...

AI Technical Summary

Problems solved by technology

The fuel filter is an essential part to ensure that pure fuel is provided for engine combustion. Its internal structure is mainly composed of a filter element, and the filtered impurities are deposited on or near the filter element. All the impurities flow to the surface of the filter element, which virtually increases the resistance of the oil flow and increases the pressure loss. Therefore, when the impurities accumulate to a certain extent, they must be replaced. The cost of materials and labor is high when replacing, which not only increases the cost of the vehicle, It is not conducive to energy saving and environmental protection, and the service life of the fuel filter still needs to be improved by technology

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