Fuel filter

Abstract

The utility model discloses a fuel filter which comprises a fuel filter shell, an aluminum filter screen cover is arranged in the fuel filter shell, a supporting seat is arranged at the bottom of the aluminum filter screen cover, a pressure relief spring is arranged in the center of the upper portion of the supporting seat, a fuel filter element is arranged in the aluminum filter screen cover, and the fuel filter element is arranged in the aluminum filter screen cover. A filter element installation opening is formed in the top of the fuel filter shell, an inner sealing cover is arranged inside the filter element installation opening, an outer sealing cover is arranged outside the filter element installation opening, an oil inlet is formed in the center of the top of the outer sealing cover, and an oil outlet is formed in the center of the bottom of the fuel filter shell. The detachable fuel oil filter is composed of the fuel oil filter shell and the fuel oil filter element, the fuel oil filter element is of a detachable structure, when the fuel oil filter element inside breaks down, only the fuel oil filter element needs to be replaced, the shell does not need to be replaced, and therefore cost expenditure is saved.

Description

Technical Field

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

[0002] Fuel filters can be divided into three categories: diesel filters, gasoline filters and natural gas filters. The function of the fuel filter is to prevent particulate matter, water and impurities in the fuel, and to protect the precision parts of the fuel system from wear and other damage. The fuel filter is connected in series on the pipeline between the fuel pump and the oil inlet of the throttle body. The function of the fuel filter is to remove solid debris such as iron oxide and dust contained in the fuel, prevent the fuel system from being blocked, reduce mechanical wear, ensure stable operation of the engine, and improve reliability.

[0003] There are still some deficiencies in the use of fuel filters in the prior art. Traditional fuel filters are usually integrated structures. The internal filter element cannot be replaced and must be replaced as a whole, which is costly and has a relatively simple internal structure. If the internal impact pressure is strong, the filter element will be deformed, affecting the filtering effect. Utility Model Content

[0004] The purpose of the utility model is to provide a fuel filter to solve the problem that the traditional fuel filter proposed in the above background technology is usually an integrated structure, the internal filter element cannot be replaced, and the whole must be replaced, which is costly, and the internal structure is relatively simple. If the internal pressure is strong, it will cause the filter element to deform and affect the filtering effect.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fuel filter, comprising a fuel filter housing, an aluminum filter cover is arranged inside the fuel filter housing, a support seat is arranged at the bottom of the aluminum filter cover, a pressure relief spring is arranged at the center position above the support seat, a fuel filter element is arranged inside the aluminum filter cover, a filter element mounting port is arranged at the top of the fuel filter housing, an inner sealing cover is arranged inside the filter element mounting port, an outer sealing cover is arranged outside the filter element mounting port, an oil inlet is arranged at the center position of the top of the outer sealing cover, and an oil outlet is arranged at the center position of the bottom of the fuel filter housing.

[0006] In a further embodiment, the bottom of the fuel filter element is connected to the support seat via a positioning guide rod and a positioning guide sleeve, the positioning guide rod and the positioning guide sleeve are connected by sliding, and the pressure relief spring is connected to the fuel filter element by embedding.

[0007] In a further embodiment, the aluminum filter cover is connected to the support seat by welding, the cross-section of the support seat is set to a trapezoidal structure, and the surface of the support seat is set to a plurality of hexagonal punchings.

[0008] In a further embodiment, the fuel filter element and the inner sealing cover are connected via a combined mosaic block and a combined mosaic sleeve, and the combined mosaic block and the combined mosaic sleeve are fixedly connected via an inserting tooth and an inserting groove.

[0009] In a further embodiment, a through opening is provided at the center of the inner sealing cover, an invisible rotating handle is provided at the top of the inner sealing cover at the periphery of the through opening, and the inner sealing cover is fixedly connected to the filter element mounting port by threads.

[0010] In a further embodiment, the two sides of the outer sealing cover are fixedly connected to the filter element installation port by side fixing bolts, the inner sealing cover and the outer sealing cover are connected by locking clamps and locking holes, and the locking clamps and the locking holes are fixedly connected by upper fixing bolts.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The utility model is composed of a fuel filter housing and a fuel filter element. The fuel filter element is set to a detachable structure. When the internal fuel filter element fails, only the fuel filter element can be replaced without replacing the housing, thereby saving cost expenditure. A decompression spring is provided between the fuel filter element and the support seat. When the impact pressure of the internal fuel filtration is strong, the fuel filter element can be moved up and down by the decompression spring, thereby alleviating the internal impact pressure, absorbing the impact force, and providing a stable pressure to the fuel filter element, thereby improving the fuel filtration effect and extending the service life of the fuel filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of a fuel filter of the utility model;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of a fuel filter of the utility model;

[0015] Figure 3 This is a detailed structural diagram of part A of the utility model;

[0016] Figure 4 A top view of a fuel filter of the utility model;

[0017] Figure 5 It is a top view of the outer sealing cover of the utility model;

[0018] Figure 6 It is a top view of the inner sealing cover of the utility model;

[0019] Figure 7 It is a top view of the fuel filter element of the utility model;

[0020] Figure 8It is a schematic diagram of the bottom structure of the inner sealing cover of the utility model.

[0021] In the figure: 1. fuel filter housing; 2. aluminum filter cover; 3. fuel filter element; 4. combined inlay sleeve; 5. filter element installation port; 6. upper fixing bolt; 7. outer sealing cover; 8. oil inlet; 9. inner sealing cover; 10. side fixing bolt; 11. support seat; 12. oil outlet; 13. pressure relief spring; 14. positioning guide rod; 15. positioning guide sleeve; 16. locking post; 17. combined inlay block; 18. locking hole; 19. invisible rotating handle; 20. through port; 21. insertion teeth; 22. insertion groove. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-8 The utility model provides an embodiment: a fuel filter, including a fuel filter housing 1, an aluminum filter cover 2 is provided inside the fuel filter housing 1, a support seat 11 is provided at the bottom of the aluminum filter cover 2, a pressure relief spring 13 is provided at the center position above the support seat 11, a fuel filter element 3 is provided inside the aluminum filter cover 2, a filter element installation port 5 is provided at the top of the fuel filter housing 1, an inner sealing cover 9 is provided inside the filter element installation port 5, an outer sealing cover 7 is provided outside the filter element installation port 5, an oil inlet 8 is provided at the center position of the top of the outer sealing cover 7, and the bottom of the fuel filter housing 1 An oil outlet 12 is provided at the center of the fuel filter housing 1; the aluminum filter cover 2 is used to improve the filtering effect of the fuel filter element 3; the support seat 11 is used to install and fix the aluminum filter cover 2, and the bottom support and positioning of the fuel filter element 3 are also performed; the fuel filter element 3 is used to filter the fuel; the filter element installation port 5 is used to install or remove the fuel filter element 3; the inner sealing cover 9 is used to seal the inside of the filter element installation port 5, and at the same time, the installation position of the fuel filter element 3 is also positioned; the outer sealing cover 7 is used to seal the outside of the filter element installation port 5, so as to improve the sealing effect of the fuel filter housing 1.

[0024] Furthermore, the bottom of the fuel filter element 3 is connected to the support seat 11 through a positioning guide rod 14 and a positioning guide sleeve 15, the positioning guide rod 14 and the positioning guide sleeve 15 are connected by sliding, and the pressure relief spring 13 and the fuel filter element 3 are connected by embedding, and the positioning guide rod 14 and the positioning guide sleeve 15 are connected to guide and position the floating position of the fuel filter element 3.

[0025] The aluminum filter cover 2 is connected to the support seat 11 by welding. The cross-section of the support seat 11 is set as a trapezoidal structure, and the surface of the support seat 11 is set as a plurality of hexagonal punchings. The welding connection is used to increase the firmness of the installation of the aluminum filter cover 2 and the support seat 11.

[0026] The fuel filter element 3 and the inner sealing cover 9 are connected through the combined mosaic block 17 and the combined mosaic sleeve 4, and the combined mosaic block 17 and the combined mosaic sleeve 4 are fixedly connected through the insertion teeth 21 and the insertion grooves 22. The combined mosaic block 17 and the combined mosaic sleeve 4 are connected to connect and assemble the fuel filter element 3 and the inner sealing cover 9, and the insertion teeth 21 and the insertion grooves 22 are connected to increase the firmness of the assembly of the combined mosaic block 17 and the combined mosaic sleeve 4; a through opening 20 is provided at the center position of the inner part of the inner sealing cover 9, and an invisible rotating handle 19 is provided at the top of the inner sealing cover 9 at the outer position of the through opening 20, and the inner sealing cover 9 is fixedly connected to the filter element mounting port 5 through threads, and the invisible rotating handle 19 is convenient for hand-held operation of the inner sealing cover 9.

[0027] The two sides of the outer sealing cover 7 are fixedly connected to the filter element installation port 5 by side fixing bolts 10, the inner sealing cover 9 is connected to the outer sealing cover 7 by locking clamps 16 and locking clamp holes 18, and the locking clamps 16 and locking clamp holes 18 are fixedly connected by upper fixing bolts 6. The side fixing bolts 10 are used to fix the two sides of the outer sealing cover 7 to the filter element installation port 5, and the locking clamps 16 and locking clamp holes 18 are connected to increase the firmness of the connection between the inner sealing cover 9 and the outer sealing cover 7.

[0028] Working principle: When in use, install the fuel filter element 3 from the filter element installation port 5 into the interior of the fuel filter housing 1, connect the positioning guide rod 14 with the positioning guide sleeve 15, hold the invisible rotating handle 19, fix the inner sealing cover 9 into the interior of the filter element installation port 5 by means of threads, assemble and fix the combined mosaic block 17 with the combined mosaic sleeve 4, install the outer sealing cover 7 on the outside of the filter element installation port 5, connect the locking column 16 with the locking hole 18, fix it with the upper fixing bolt 6, fix the outer sealing cover 7 with the filter element installation port 5 with the side fixing bolt 10, connect and fix the oil inlet 8 and the oil outlet 12 with the fuel pump and the throttle body respectively, and the fuel can be filtered through the fuel filter element 3 and the aluminum filter cover 2.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A fuel filter, comprising a fuel filter housing (1), characterized in that: An aluminum filter cover (2) is provided inside the fuel filter housing (1), a support seat (11) is provided at the bottom of the aluminum filter cover (2), a pressure relief spring (13) is provided at the center position above the support seat (11), a fuel filter element (3) is provided inside the aluminum filter cover (2), a filter element mounting opening (5) is provided at the top of the fuel filter housing (1), an inner sealing cover (9) is provided inside the filter element mounting opening (5), an outer sealing cover (7) is provided outside the filter element mounting opening (5), an oil inlet (8) is provided at the center position of the top of the outer sealing cover (7), and an oil outlet (12) is provided at the center position of the bottom of the fuel filter housing (1).

2. A fuel filter according to claim 1, characterized in that: The bottom of the fuel filter element (3) is connected to the support seat (11) via a positioning guide rod (14) and a positioning guide sleeve (15); the positioning guide rod (14) and the positioning guide sleeve (15) are connected by sliding, and the pressure relief spring (13) and the fuel filter element (3) are connected by embedding.

3. A fuel filter according to claim 1, characterized in that: The aluminum filter cover (2) is connected to the support seat (11) by welding; the cross section of the support seat (11) is configured as a trapezoidal structure, and the surface of the support seat (11) is configured as a plurality of hexagonal punched holes.

4. A fuel filter according to claim 1, characterized in that: The fuel filter element (3) and the inner sealing cover (9) are connected via a combined inlay block (17) and a combined inlay sleeve (4), and the combined inlay block (17) and the combined inlay sleeve (4) are fixedly connected via an inlay tooth (21) and an inlay groove (22).

5. A fuel filter according to claim 1, characterized in that: A through opening (20) is provided at the center of the inner sealing cover (9), an invisible rotating handle (19) is provided at the top of the inner sealing cover (9) at the periphery of the through opening (20), and the inner sealing cover (9) is fixedly connected to the filter element mounting opening (5) via threads.

6. A fuel filter according to claim 1, characterized in that: The two sides of the outer sealing cover (7) are fixedly connected to the filter element installation opening (5) via side fixing bolts (10), the inner sealing cover (9) and the outer sealing cover (7) are connected via locking clamping columns (16) and locking clamping holes (18), and the locking clamping columns (16) and the locking clamping holes (18) are fixedly connected via upper fixing bolts (6).

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