A detachable fuel filter

Abstract

The utility model discloses a detachable fuel filter, including filter shell, filter shell assembly is on fuel pump still includes the installation mechanism for constituting built -in mounting structure, the filter core mechanism for constituting the filter core structure of assembly type and the end cover mechanism for constituting quick -witted end cover structure, installation mechanism arrangement is in the inside of filter shell, and the filter core mechanism assembly is on installation mechanism, and the end cover mechanism corresponds filter core mechanism configuration in one end of filter shell, the beneficial effects of the utility model are equipped with installation mechanism and filter core mechanism cooperation, can provide detachable mounting support for filter core structure, and the assembly stability of filter core structure is guaranteed to the filter core structure of dismounting simultaneously, and each part of filter core structure can realize assembly connection, and the maintenance and replacement are convenient, are equipped with end cover mechanism, and it is assembled in one end of filter shell through lock joint subassembly, can realize the quick dismounting of end cover to the replacement of filter core structure, improves filter core replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of fuel filter technology, and in particular to a detachable fuel filter. Background Technology

[0002] In existing technology, fuel filters are classified into three types: diesel filters, gasoline filters, and natural gas filters. The function of a fuel filter is to prevent particulate matter, water, and impurities in the fuel, ensuring that the precision components of the fuel system are protected from wear and other damage. The fuel filter is connected in series between the fuel pump and the fuel inlet of the throttle body. The function of the fuel filter is to remove solid impurities such as iron oxide and dust contained in the fuel, prevent fuel system blockage, reduce mechanical wear, ensure stable engine operation, and improve reliability. The structure of the fuel filter consists of an aluminum shell and a support frame with a stainless steel inner core. High-efficiency filter paper sheets are mounted on the support frame. The filter paper sheets are chrysanthemum-shaped to increase the flow area. Electronic fuel injection filters are not interchangeable with carburetor filters. Existing fuel filters typically employ an integral structure, with the end cap snapped onto the housing. This makes reinstallation difficult after disassembly. When a fuel filter malfunctions, it is usually due to excessive internal filter residue, preventing it from filtering properly. After repair, it is often impossible to reinstall it completely, resulting in an unstable overall structure and wasted resources. Furthermore, disassembly is inconvenient during cleaning and maintenance.

[0003] Chinese utility model patent application number 202021431136.5 discloses a detachable fuel filter, including an upper unit housing and an inlet pipe. A top cover is fixedly connected to the upper end face of the upper unit housing, an inlet pipe is fixedly connected to the left end face of the upper unit housing, and an outlet pipe is fixedly connected to the right end face of the upper unit housing. A lower unit housing is located below the upper unit housing, and a first sealing ring and a second sealing ring, arranged internally, are fixedly connected to the upper end face of the lower unit housing. The upper end face of the lower unit housing is slidably connected to the inner wall of the upper unit housing. However, this detachable fuel filter uses an assembled housing structure, which has poor housing sealing performance, making it prone to air or oil leaks, affecting the working effect of the fuel filter. Furthermore, the fixed assembly of the upper unit housing and the top cover makes it inconvenient for later disassembly and maintenance. Summary of the Invention

[0004] The purpose of this invention is to provide a detachable fuel filter.

[0005] To achieve the above objectives, the technical solution proposed by this utility model is as follows: A detachable fuel filter includes a filter housing mounted on a fuel pump, a mounting mechanism for forming a built-in mounting structure, a filter element mechanism for forming an assembled filter element structure, and an end cap mechanism for forming a quick-release end cap structure. The mounting mechanism is arranged inside the filter housing, the filter element mechanism is mounted on the mounting mechanism, and the end cap mechanism is disposed at one end of the filter housing corresponding to the filter element mechanism.

[0006] The mounting mechanism includes a mounting base tube and a mounting base plate. The mounting base tube is disposed on the lower inner side of the filter housing and is fixedly connected to the filter housing. The mounting base plate is disposed on the upper part of the mounting base tube and is fixedly connected to the mounting base tube. The mounting base plate is fixedly connected to the mounting base tube and the inner wall of the filter housing. The upper part of the mounting base tube protrudes from the mounting base plate and has external threads on its outer side.

[0007] It also includes positioning blocks, of which there are several, and the several positioning blocks are evenly spaced around the side of the mounting base near the end cap mechanism and are fixedly connected to the mounting base.

[0008] The filter element mechanism includes a filter element screen, a filter element cover, and a filter assembly. The filter element screen is disposed on the side of the mounting base near the positioning block and its lower part is threadedly connected to the mounting base pipe. The filter element screen is located inside a plurality of the positioning blocks and is snapped onto the mounting base via the positioning blocks. The filter element cover is disposed at the end of the filter element screen away from the mounting base and is threadedly connected to the filter element screen. The filter assembly is arranged inside the filter element screen.

[0009] The filter assembly includes a filter core tube and a high-efficiency filter paper. The filter core tube is disposed inside the filter element screen and its lower end is fixedly connected to the lower part of the filter element screen. The filter core tube has a plurality of oil passage holes evenly spaced on it and is connected to the mounting base tube. The high-efficiency filter paper is disposed between the filter core tube and the filter element screen and is fitted to the filter element screen.

[0010] The end cap mechanism includes a filter end cap, an end cap handle, and a locking assembly. The filter end cap is disposed at one end of the filter housing and is fastened to the filter housing. The end cap handle is disposed on the side of the filter end cap away from the filter housing and is fixedly connected to the filter end cap. The locking assembly is provided in several sets, and the several sets of locking assemblies are evenly spaced on the side of the filter housing near the filter end cap.

[0011] It also includes a sealing gasket, which is disposed on the periphery of the filter end cap near the filter housing and is fixedly connected to the filter end cap. The sealing gasket is configured as an annular groove gasket structure, and the filter end cap is fastened to the filter housing through the sealing gasket.

[0012] The locking assembly includes a locking base, a locking lever, and a locking buckle. The locking base is disposed on the side of the filter housing near the filter end cap and is fixedly connected to the filter housing. The locking lever is disposed on the lower part of the locking base and one end of the lever is rotatably connected to the locking base. The locking buckle is disposed on the end of the locking lever near the filter end cap and one end of the buckle is rotatably connected to the locking lever via a pivot. The end of the locking buckle away from the locking lever is fastened to the filter end cap.

[0013] The edge of the filter end cap is provided with a locking protrusion corresponding to the locking buckle, and the locking buckle is fastened to the filter end cap through the locking protrusion.

[0014] It also includes an oil inlet and an oil outlet. The oil inlet is located at the end of the filter housing away from the filter end cap, corresponding to the mounting base tube, and passes through the filter housing and communicates with the mounting base tube. The oil outlet is located on the upper side of the filter housing and is fixedly connected to the filter housing. The oil outlet communicates with the interior of the filter housing.

[0015] The beneficial effects of this utility model are: The filter cartridge is equipped with an installation mechanism that works in conjunction with the filter cartridge mechanism to provide a detachable installation support for the filter cartridge structure. This facilitates the disassembly and assembly of the filter cartridge structure while ensuring the assembly stability of the filter cartridge structure. All parts of the filter cartridge structure can be assembled and connected, which is convenient for maintenance and replacement. An end cap mechanism is provided, which is assembled to one end of the filter housing through a locking assembly. This allows for quick disassembly and assembly of the end cap to facilitate the replacement of the filter cartridge structure, saving replacement time and improving filter cartridge replacement efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the installation mechanism and filter element mechanism of this utility model. Figure 3 This is a cross-sectional view of the filter element mechanism of this utility model.

[0017] In the diagram: 1. Filter housing; 2. Mounting base tube; 3. Mounting base plate; 4. Positioning block; 5. Filter element screen cover; 6. Filter element cover; 7. Filter element tube; 8. High-efficiency filter paper; 9. Filter end cap; 10. End cap handle; 11. Sealing gasket; 12. Locking base; 13. Locking lever; 14. Locking buckle; 15. Oil inlet; 16. Oil outlet. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings. A detachable fuel filter includes a filter housing 1, which is mounted on a fuel pump. It also includes a mounting mechanism for a built-in installation structure, a filter element mechanism for a modular filter element structure, and an end cap mechanism for a quick-release end cap structure. The mounting mechanism is located inside the filter housing 1, the filter element mechanism is mounted on the mounting mechanism, and the end cap mechanism is positioned at one end of the filter housing 1 corresponding to the filter element mechanism. A schematic diagram of the overall structure of this utility model is shown below. Figure 1 As shown.

[0019] The mounting mechanism includes a mounting base tube 2 and a mounting base plate 3. The mounting base tube 2 is located on the lower inner side of the filter housing 1 and is fixedly connected to the filter housing 1. The mounting base plate 3 is located on the upper part of the mounting base tube 2 and is fixedly connected to the mounting base tube 2. The mounting base plate 3 is fixedly connected to the mounting base tube 2 and the inner wall of the filter housing 1. The upper part of the mounting base tube 2 protrudes from the mounting base plate 3 and has external threads on its outer side. The mounting mechanism, through the cooperation of the mounting base tube 2 and the mounting base plate 3, forms the internal mounting structure of the filter housing 1, thereby providing mounting support for the filter element mechanism. The mounting base tube 2 is used to provide mounting support for the mounting base plate 3 and to connect the oil inlet 15 to the filter element mechanism. The mounting base plate 3 is used to provide positioning support for the filter element mechanism. A cross-sectional view of the mounting mechanism and the filter element mechanism of this utility model is shown below. Figure 2 As shown.

[0020] It also includes positioning blocks 4, of which there are several. The positioning blocks 4 are evenly spaced around the filter element mechanism on the side of the mounting base 3 near the end cap mechanism and are fixedly connected to the mounting base 3. The positioning blocks 4 are used as positioning structures on the mounting base 3 to position the filter element mechanism in conjunction with the mounting base 3.

[0021] The filter element mechanism includes a filter element cover 5, a filter element cap 6, and a filter assembly. The filter element cover 5 is located on the side of the mounting base 3 near the positioning blocks 4, and its lower part is threadedly connected to the mounting base tube 2. The filter element cover 5 is located inside several positioning blocks 4 and is snapped onto the mounting base 3 via the positioning blocks 4. The filter element cap 6 is located at the end of the filter element cover 5 away from the mounting base 3 and is threadedly connected to the filter element cover 5. The filter assembly is arranged inside the filter element cover 5. The filter element mechanism filters fuel through the cooperation of the filter element cover 5, the filter element cap 6, and the filter assembly. The filter element cover 5 provides mounting support for the filter element cap 6 and the filter assembly. The filter element cap 6, together with the filter element cover 5, forms the main body of the filter element structure and provides mounting support for the filter assembly. The filter assembly is used to filter fuel. A cross-sectional view of the filter element mechanism of this utility model is shown below. Figure 3 As shown.

[0022] The filter assembly includes a filter core tube 7 and high-efficiency filter paper 8. The filter core tube 7 is disposed inside the filter element screen 5 and its lower end is fixedly connected to the lower part of the filter element screen 5. Several oil passage holes are evenly spaced on the filter core tube 7 and the filter core tube 7 is connected to the mounting base tube 2. The high-efficiency filter paper 8 is disposed between the filter core tube 7 and the filter element screen 5 and is fitted to the filter element screen 5. The filter assembly filters fuel through the cooperation of the filter core tube 7 and the high-efficiency filter paper 8. The filter core tube 7 serves as a support and positioning structure inside the filter element screen 5 and meets the oil inlet requirements of the filter element mechanism. The high-efficiency filter paper 8 is used to filter the fuel to meet the usage standards.

[0023] The end cap mechanism includes a filter end cap 9, an end cap handle 10, and a locking assembly. The filter end cap 9 is located at one end of the filter housing 1 and is fastened to the filter housing 1. The end cap handle 10 is located on the side of the filter end cap 9 away from the filter housing 1 and is fixedly connected to the filter end cap 9. Several sets of locking assemblies are provided, and the several sets of locking assemblies are evenly spaced on the side of the filter housing 1 near the filter end cap 9. The end cap mechanism, through the cooperation of the filter end cap 9, the end cap handle 10, and the locking assembly, forms a quick-release end cap structure at the end of the filter housing 1. The filter end cap 9 is used as the end cap structure at the end of the filter housing 1 to realize the opening and closing of the filter. The end cap handle 10 is used as a handle structure on the filter end cap 9 to facilitate the lifting and lowering of the filter end cap 9. The locking assembly is used to realize the quick assembly and disassembly between the filter end cap 9 and the filter housing 1.

[0024] It also includes a sealing gasket 11, which is disposed on the periphery of the filter end cover 9 near the filter housing 1 and is fixedly connected to the filter end cover 9. The sealing gasket 11 is configured as an annular groove gasket structure. The filter end cover 9 is fastened to the filter housing 1 through the sealing gasket 11. The sealing gasket 11 is used to achieve a sealing fit between the filter end cover 9 and the filter housing 1 to prevent oil leakage at the connection between the two.

[0025] The locking assembly includes a locking base 12, a locking lever 13, and a locking buckle 14. The locking base 12 is located on the side of the filter housing 1 near the filter end cover 9 and is fixedly connected to the filter housing 1. The locking lever 13 is located at the lower part of the locking base 12, and one end of it is rotatably connected to the locking base 12. The locking buckle 14 is located at the end of the locking lever 13 near the filter end cover 9, and one end of it is rotatably connected to the locking lever 13 via a pivot. The end of the locking buckle 14 away from the locking lever 13 is fastened to the filter end cover 9. The locking assembly is connected by the locking base 12, the locking lever 13, and the locking buckle 14. This allows for quick assembly and disassembly between the filter end cap 9 and the filter housing 1. The locking base 12 provides mounting support for the locking lever 13. The locking lever 13 rotates relative to the locking base 12 to activate the locking buckle 14. The locking buckle 14, under the action of the locking lever 13, locks and unlocks the filter end cap 9, thus enabling quick assembly and disassembly between the filter end cap 9 and the filter housing 1. In this technical solution, the locking assembly can adopt a locking structure with locking function from existing technology. Its structure and working principle are both existing technologies, so they will not be described in detail here.

[0026] The edge of the filter end cap 9 is provided with a locking protrusion corresponding to the locking buckle 14. The locking buckle 14 is fastened to the filter end cap 9 through the locking protrusion. The locking protrusion is used to meet the locking requirements of the locking buckle 14.

[0027] It also includes an oil inlet 15 and an oil outlet 16. The oil inlet 15 is located at the end of the filter housing 1 away from the filter end cap 9, corresponding to the mounting base tube 2, and passes through the filter housing 1 and is connected to the mounting base tube 2. The oil outlet 16 is located on the upper side of the filter housing 1 and is fixedly connected to the filter housing 1. The oil outlet 16 is connected to the interior of the filter housing 1. The oil inlet 15 is used as the oil inlet channel of the fuel filter, and the oil outlet 16 is used as the oil outlet channel of the fuel filter.

[0028] Working principle: During operation, the fuel filter is mounted on the fuel pump, with its outlet 16 connected to the fuel pump's inlet pipe. Fuel enters the fuel filter through the inlet 15 and passes through the oil passage on the filter element tube 7 into the filter element mechanism. The high-efficiency filter paper 8 filters the fuel. The filtered fuel flows out of the filter element mechanism through the filter element screen 5 and then out of the fuel filter through the outlet 16, completing the fuel filtration process. The filtered fuel then flows into the fuel pump to meet its operating requirements. When the filter element mechanism needs to be replaced or the fuel filter needs maintenance, the locking lever 13 is moved to lock the filter. Once the buckle 14 disengages from the filter end cover 9, the filter end cover 9 can be removed from the filter housing 1. Then, rotate the filter element cover 6 to remove it from the filter element screen 5, allowing the high-efficiency filter paper 8 to be replaced. The filter screen can also be rotated to remove it from the mounting base tube 2, enabling maintenance and replacement of the filter element mechanism. After replacement or maintenance, reset the filter element mechanism and fasten the filter end cover 9 onto the filter housing 1. Then, use the locking assembly to lock the filter end cover 9 and the filter housing 1 together, completing the quick assembly between the filter end cover 9 and the filter housing 1.

[0029] The beneficial effects of this utility model are that it has an installation mechanism that works in conjunction with the filter element mechanism to provide a detachable installation support for the filter element structure, which facilitates the disassembly and assembly of the filter element structure while ensuring the assembly stability of the filter element structure. All parts of the filter element structure can be assembled and connected, which is convenient for maintenance and replacement. It also has an end cap mechanism that is assembled at one end of the filter housing through a locking assembly, which can realize the quick disassembly and assembly of the end cap to facilitate the replacement of the filter element structure, save replacement time, and improve filter element replacement efficiency.

[0030] The above description details one embodiment of the present utility model, but it is merely a preferred embodiment and should not be construed as limiting the scope of the present utility model. All equivalent variations and improvements made within the scope of the present utility model application should still fall within the patent coverage of the present utility model.

Claims

1. A detachable fuel filter, comprising a filter housing (1) mounted on a fuel pump, characterized in that, It also includes an installation mechanism for forming a built-in installation structure, a filter element mechanism for forming an assembled filter element structure, and an end cap mechanism for forming a quick-install end cap structure. The installation mechanism is arranged inside the filter housing (1), the filter element mechanism is assembled on the installation mechanism, and the end cap mechanism is arranged at one end of the filter housing (1) corresponding to the filter element mechanism.

2. A detachable fuel filter as described in claim 1, characterized in that, The mounting mechanism includes a mounting base tube (2) and a mounting base plate (3). The mounting base tube (2) is disposed on the lower inner side of the filter housing (1) and is fixedly connected to the filter housing (1). The mounting base plate (3) is disposed on the upper part of the mounting base tube (2) and is fixedly connected to the mounting base tube (2). The mounting base plate (3) is fixedly connected to the mounting base tube (2) and the inner wall of the filter housing (1). The upper part of the mounting base tube (2) protrudes from the mounting base plate (3) and has external threads on its outer side.

3. A detachable fuel filter as described in claim 2, characterized in that, It also includes positioning blocks (4), and there are several positioning blocks (4). The several positioning blocks (4) are evenly spaced around the filter element mechanism on the side of the mounting base plate (3) near the end cap mechanism and are fixedly connected to the mounting base plate (3).

4. A detachable fuel filter as described in claim 3, characterized in that, The filter element mechanism includes a filter element screen (5), a filter element cover (6), and a filter assembly. The filter element screen (5) is disposed on the side of the mounting base (3) near the positioning block (4) and its lower part is threadedly connected to the mounting base tube (2). The filter element screen (5) is located inside a plurality of the positioning blocks (4) and is snapped onto the mounting base (3) via the positioning blocks (4). The filter element cover (6) is disposed at the end of the filter element screen (5) away from the mounting base (3) and is threadedly connected to the filter element screen (5). The filter assembly is arranged inside the filter element screen (5).

5. A detachable fuel filter as described in claim 4, characterized in that, The filter assembly includes a filter core tube (7) and a high-efficiency filter paper (8). The filter core tube (7) is disposed inside the filter element screen (5) and its lower end is fixedly connected to the lower part of the filter element screen (5). The filter core tube (7) has several oil passage holes evenly spaced on it and is connected to the mounting base tube (2). The high-efficiency filter paper (8) is disposed between the filter core tube (7) and the filter element screen (5) and is fitted to the filter element screen (5).

6. A detachable fuel filter as described in claim 5, characterized in that, The end cap mechanism includes a filter end cap (9), an end cap handle (10), and a locking assembly. The filter end cap (9) is disposed at one end of the filter housing (1) and is fastened to the filter housing (1). The end cap handle (10) is disposed on the side of the filter end cap (9) away from the filter housing (1) and is fixedly connected to the filter end cap (9). The locking assembly is provided in several groups, and the several groups of locking assemblies are evenly spaced on the side of the filter housing (1) near the filter end cap (9).

7. A detachable fuel filter as described in claim 6, characterized in that, It also includes a sealing gasket (11), which is disposed on the periphery of the filter end cap (9) near the filter housing (1) and is fixedly connected to the filter end cap (9). The sealing gasket (11) is configured as an annular groove gasket structure, and the filter end cap (9) is fastened to the filter housing (1) through the sealing gasket (11).

8. A detachable fuel filter as described in claim 7, characterized in that, The locking assembly includes a locking base (12), a locking lever (13), and a locking buckle (14). The locking base (12) is disposed on the side of the filter housing (1) near the filter end cap (9) and is fixedly connected to the filter housing (1). The locking lever (13) is disposed on the lower part of the locking base (12) and one end of it is rotatably connected to the locking base (12). The locking buckle (14) is disposed on the end of the locking lever (13) near the filter end cap (9) and one end of it is rotatably connected to the locking lever (13) via a pivot. The end of the locking buckle (14) away from the locking lever (13) is fastened to the filter end cap (9).

9. A detachable fuel filter as described in claim 8, characterized in that, The edge of the filter end cap (9) is provided with a locking protrusion corresponding to the locking buckle (14), and the locking buckle (14) is fastened to the filter end cap (9) through the locking protrusion.

10. A detachable fuel filter as described in claim 9, characterized in that, It also includes an oil inlet (15) and an oil outlet (16). The oil inlet (15) is located at the end of the filter housing (1) away from the filter end cap (9) corresponding to the mounting base tube (2) and passes through the filter housing (1) and communicates with the mounting base tube (2). The oil outlet (16) is located on the upper side of the filter housing (1) and is fixedly connected to the filter housing (1). The oil outlet (16) communicates with the interior of the filter housing (1).

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