Fuel filter

Abstract

The utility model discloses a fuel filter, which belongs to the technical field of fuel filters, and comprises a filter shell, a filter side cover is arranged at one end of the filter shell, a filter component is arranged in the filter shell, and the filter component comprises two annular mounting plates. A transverse connecting rod is fixed between the two annular mounting plates, a transverse circular pipe is fixed between the two annular mounting plates and located on the inner side of the transverse connecting rod, and annular filter paper is arranged between the two annular mounting plates and located on the outer side of the transverse connecting rod; through a series of designs, impurities on the outer side of the circular filter sleeve can be scraped, the permeability and the filter effect of the circular filter sleeve are recovered, the service life of the circular filter sleeve is prolonged, the overall filter performance of the fuel filter is effectively improved, the replacement frequency is reduced, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fuel filters, and in particular relates to a fuel filter. Background Art

[0002] The fuel filter plays a vital role in the engine fuel system. Its main function is to filter out impurities in the fuel to ensure the purity of the fuel, thereby protecting the engine and improving its performance and life. Existing fuel filters usually use paper or synthetic fiber materials as filter elements, and separate particulate matter, impurities and water in the fuel through physical filtration methods. However, as the use time increases, impurities on the surface of the filter element will gradually accumulate, resulting in a decrease in filtration efficiency, affecting the fluidity of the fuel, and further affecting the normal operation of the engine.

[0003] After impurities accumulate on the annular filter paper of the existing fuel filter, it is often necessary to replace the filter element regularly to ensure its filtering effect. However, this method not only increases the maintenance cost, but also imposes a certain burden on the environment. Therefore, how to maintain the filtering effect of the annular filter paper without frequently replacing the filter element has become an important direction for the improvement design of the fuel filter. To this end, we design a fuel filter to provide another technical solution to the above technical problems. Utility Model Content

[0004] The purpose of the utility model is to provide a fuel filter to solve the problems of the prior art in the use process mentioned in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel filter, comprising a filter housing, a filter side cover is arranged at one end of the filter housing, a filter assembly is arranged inside the filter housing, the filter assembly comprises two annular mounting plates, a transverse connecting rod is fixed between the two annular mounting plates, a transverse round tube is fixed between the two annular mounting plates and located on the inner side of the transverse connecting rod, an annular filter paper is arranged between the two annular mounting plates and located on the outer side of the transverse connecting rod, an annular check valve is arranged at one end of one of the annular mounting plates, and a bypass valve mechanism is arranged inside the other annular mounting plate;

[0006] A circular filter sleeve is also arranged on the outside of the annular filter paper, and U-shaped connectors are fixed on both ends of the circular filter sleeve, and the U-shaped connector is fixedly connected to the annular mounting plate. A cleaning mechanism for cleaning the surface of the circular filter sleeve is arranged inside the filter housing.

[0007] Preferably, a plurality of through holes are evenly distributed inside the transverse circular tube.

[0008] Preferably, the cleaning mechanism includes an annular scraping plate and an annular connecting plate. A transverse threaded rod is threadedly connected inside the top end of the annular scraping plate. A transverse smooth rod is slidably connected inside the bottom end of the annular scraping plate. One end of the transverse threaded rod is fixed with a transverse rotating column, and one end of the transverse rotating column is fixed with a rotating handwheel.

[0009] Preferably, the transverse smooth rod is located inside the filter housing and fixedly connected to the filter housing. The transverse smooth rod penetrates through the inside of the annular connecting plate and is fixedly connected to the annular connecting plate.

[0010] Preferably, the transverse rotating column penetrates through the inside of the annular connecting plate and the filter housing respectively and is rotatably connected to the transverse rotating column and the filter housing through bearings.

[0011] Preferably, the bypass valve mechanism includes a plurality of L-shaped connectors. One end of the other annular mounting plate is fixed with a plurality of L-shaped connectors. A rigid spring is arranged inside the L-shaped connector. One end of the rigid spring is provided with a circular baffle. The circular baffle is in clearance fit with the other annular mounting plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] Through a series of designs, the present utility model can scrape impurities on the outer side of the circular filter sleeve, restore the permeability and filtering effect of the circular filter sleeve, extend the service life of the circular filter sleeve, effectively improve the overall filtering performance of the fuel filter, reduce the replacement frequency, and lower the maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the whole of the present utility model;

[0015] Figure 2 is a schematic structural diagram inside the filter housing of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the annular mounting plate and the annular filter paper of the present utility model;

[0017] Figure 4 is a schematic structural diagram of the transverse connecting rod of the present utility model;

[0018] Figure 5 is a schematic structural diagram of the circular filter sleeve and the U-shaped connector of the present utility model;

[0019] Figure 6 is a schematic structural diagram of the transverse rotating column and the rotating handwheel of the present utility model;

[0020] Figure 7This is a schematic structural diagram of the annular scraper and the annular connecting plate of the present utility model.

[0021] In the figure: 1, filter housing; 2, filter side cover; 3, annular check valve; 4, circular filter sleeve; 5, U-shaped connecting piece; 6, annular mounting plate; 7, annular filter paper; 8, transverse circular tube; 9, transverse connecting rod; 10, L-shaped connecting piece; 11, rigid spring; 12, circular baffle; 13, transverse threaded rod; 14, annular scraper; 15, annular connecting plate; 16, transverse rotating column; 17, rotating handwheel; 18, transverse smooth rod. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Referring to Figure 1-7 , a fuel filter includes a filter housing 1, a filter side cover 2 is provided at one end of the filter housing 1, a filtering component is provided inside the filter housing 1, the filtering component includes two annular mounting plates 6, a transverse connecting rod 9 is fixed between the two annular mounting plates 6, a transverse circular tube 8 is fixed inside the two annular mounting plates 6 and on the inner side of the transverse connecting rod 9, an annular filter paper 7 is provided between the two annular mounting plates 6 and on the outer side of the transverse connecting rod 9, an annular check valve 3 is provided at one end of one of the annular mounting plates 6, and a bypass valve mechanism is provided inside the other annular mounting plate 6;

[0024] A circular filter sleeve 4 is further provided outside the annular filter paper 7, U-shaped connecting pieces 5 are fixed at both ends of the circular filter sleeve 4, the U-shaped connecting pieces 5 are fixedly connected to the annular mounting plates 6, and a cleaning mechanism for cleaning the surface of the circular filter sleeve 4 is provided inside the filter housing 1;

[0025] A plurality of through holes are evenly arranged inside the transverse circular tube 8 for fuel to enter the inside of the transverse circular tube 8;

[0026] The cleaning mechanism includes an annular scraper 14 and an annular connecting plate 15. A transverse threaded rod 13 is threadedly connected inside the top end of the annular scraper 14, a transverse smooth rod 18 is slidably connected inside the bottom end of the annular scraper 14, a transverse rotating column 16 is fixed at one end of the transverse threaded rod 13, and a rotating handwheel 17 is fixed at one end of the transverse rotating column 16;

[0027] The horizontal light rod 18 is located inside the filter housing 1 and is fixedly connected to the filter housing 1. The horizontal light rod 18 passes through the inside of the annular connecting plate 15 and is fixedly connected to the annular connecting plate 15, so that the annular connecting plate 15 can be fixed outside the horizontal light rod 18, enabling the annular connecting plate 15 to be fixed and preventing the movement of the annular connecting plate 15;

[0028] The horizontal rotating column 16 passes through the inside of the annular connecting plate 15 and the filter housing 1 respectively and is rotatably connected to the horizontal rotating column 16 and the filter housing 1 through bearings, enabling the horizontal rotating column 16 to rotate inside the annular connecting plate 15 and the filter housing 1;

[0029] Here, by rotating the rotating handwheel 17, the horizontal rotating column 16 can rotate inside the filter housing 1 and the annular connecting plate 15. The rotation of the horizontal rotating column 16 enables the annular scraping plate 14 to move, enabling the annular scraping plate 14 to scrape the impurities on the outer side of the circular filter sleeve 4, and enabling the annular scraping plate 14 and the annular connecting plate 15 to fit, so that the annular scraping plate 14 and the annular connecting plate 15 can collect the impurities, prevent the leakage of impurities, prevent the decline of the filtering effect of the circular filter sleeve 4, and be used to maintain the filtering effect of the circular filter sleeve 4;

[0030] The bypass valve mechanism includes a plurality of L-shaped connectors 10. One end of another annular mounting plate 6 is fixed with a plurality of L-shaped connectors 10. A rigid spring 11 is arranged inside the L-shaped connector 10. One end of the rigid spring 11 is provided with a circular baffle 12. The circular baffle 12 is in clearance fit with another annular mounting plate 6 to prevent the backflow of liquid. And when the pressure inside the filter housing 1 is too high, the liquid inside the filter housing 1 can pass between the circular baffle 12 and another annular mounting plate 6 and enter the inside of the two annular mounting plates 6.

[0031] Through a series of designs, it is possible to scrape the impurities on the outer side of the circular filter sleeve 4, restore the permeability and filtering effect of the circular filter sleeve 4, extend the service life of the circular filter sleeve 4, effectively improve the overall filtering performance of the fuel filter, reduce the replacement frequency, and reduce the maintenance cost.

[0032] Working principle: By rotating the rotary handwheel 17, the transverse rotary column 16 can rotate inside the filter housing 1 and the annular connecting plate 15. The rotation of the transverse rotary column 16 enables the annular scraper 14 to move, so that the annular scraper 14 can scrape the impurities on the outer side of the circular filter sleeve 4, and enables the annular scraper 14 and the annular connecting plate 15 to fit together, so that the annular scraper 14 and the annular connecting plate 15 can collect the impurities, prevent the leakage of impurities, prevent the decline of the filtering effect of the circular filter sleeve 4, and is used to maintain the filtering effect of the circular filter sleeve 4.

[0033] The circular baffle 12 is in clearance fit with the other annular mounting plate 6 to prevent the backflow of liquid. And when the pressure inside the filter housing 1 is too high, the liquid inside the filter housing 1 can enter the inside of the two annular mounting plates 6 through the gap between the circular baffle 12 and the other annular mounting plate 6.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fuel filter, characterized in that: The filter comprises a filter housing (1), one end of which is provided with a filter side cover (2), a filter assembly is provided inside the filter housing (1), the filter assembly comprises two annular mounting plates (6), a transverse connecting rod (9) is fixed between the two annular mounting plates (6), a transverse circular tube (8) is fixed between the two annular mounting plates (6) and located on the inner side of the transverse connecting rod (9), an annular filter paper (7) is provided between the two annular mounting plates (6) and located on the outer side of the transverse connecting rod (9), an annular check valve (3) is provided at one end of one of the annular mounting plates (6), and a bypass valve mechanism is provided inside the other annular mounting plate (6); A circular filter sleeve (4) is also provided on the outside of the annular filter paper (7), U-shaped connectors (5) are fixed to both ends of the circular filter sleeve (4), and the U-shaped connector (5) is fixedly connected to the annular mounting plate (6), and a cleaning mechanism for cleaning the surface of the circular filter sleeve (4) is provided inside the filter housing (1).

2. A fuel filter according to claim 1, characterized in that: The interior of the transverse circular tube (8) is evenly provided with a plurality of through holes.

3. A fuel filter according to claim 1, characterized in that: The cleaning mechanism comprises an annular scraper (14) and an annular connecting plate (15); the top end of the annular scraper (14) is internally threadedly connected to a transverse threaded rod (13); the bottom end of the annular scraper (14) is internally slidably connected to a transverse smooth rod (18); one end of the transverse threaded rod (13) is fixed with a transverse rotating column (16); and one end of the transverse rotating column (16) is fixed with a rotating hand wheel (17).

4. A fuel filter according to claim 3, characterized in that: The transverse light rod (18) is located inside the filter housing (1) and is fixedly connected to the filter housing (1); the transverse light rod (18) passes through the inside of the annular connecting plate (15) and is fixedly connected to the annular connecting plate (15).

5. A fuel filter according to claim 3, characterized in that: The transverse rotating column (16) respectively penetrates the interior of the annular connecting plate (15) and the filter housing (1) and is rotationally connected to the transverse rotating column (16) and the filter housing (1) via bearings.

6. A fuel filter according to claim 1, characterized in that: The bypass valve mechanism comprises a plurality of L-shaped connecting pieces (10), wherein one end of another of the annular mounting plates (6) is fixed with the plurality of L-shaped connecting pieces (10), a rigid spring (11) is arranged inside the L-shaped connecting piece (10), and a circular baffle (12) is arranged at one end of the rigid spring (11), and the circular baffle (12) is clearance-matched with another of the annular mounting plates (6).

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