A replaceable filter fuel filter

Abstract

The utility model discloses a replaceable filter element's fuel filter relates to fuel filter related technical field, including fuel filter casing, the top of fuel filter casing is provided with the limit card shell, the top of limit card shell is provided with the closed top shell, the inside of fuel filter casing is provided with filter core subassembly. That replaceable filter element's fuel filter, filter core inner housing forms a filter's cavity through bottom support plate cooperation filter hole, and fuel is discharged fast, and fuel primary filter core passes through fixed top ring cooperation connection clamping groove and limit support plate quick installation, and it is convenient to primary filter to fuel, and the fuel of primary filtration enters filter paper tube and carries out secondary filtration through the clearance of limit support plate, and it is helpful to improve the effect of fuel filtration, and filter paper tube is fixed in the outside of fixed top ring and limit support plate through connecting sleeve hole, and it is convenient to limit fuel primary filter core and filter paper tube through limit card shell, and it is convenient to flexible dismounting, and it is convenient to replace operation to filter core.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel filters, specifically a fuel filter with replaceable filter element. Background Technology

[0002] The function of a fuel filter is to filter out harmful particles and moisture from the engine fuel system to protect the fuel pump, injectors, cylinder liners, piston rings, etc., reduce wear, and prevent clogging. If the fuel filter element is not replaced for a long time, the filtration effect will be affected. Therefore, there is an urgent need for a fuel filter with a replaceable filter element.

[0003] Currently, fuel filters are inconvenient to assemble flexibly, affecting the ease of filter element replacement. Furthermore, the filter element can only filter once, impacting the overall filtration efficiency of the fuel filter. Utility Model Content

[0004] The purpose of this utility model is to provide a fuel filter with a replaceable filter element, so as to solve the problems mentioned in the background art, such as the inconvenience of flexible assembly of fuel filters, which affects the convenience of filter element replacement, and the fact that the filter element can only filter once, which affects the overall filtration effect of the fuel filter.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a replaceable fuel filter, comprising a fuel filter housing, a limiting retainer at the top of the fuel filter housing, a closed top shell at the top of the limiting retainer, a filter element assembly inside the fuel filter housing, the filter element assembly comprising an inner filter shell, a fixing bottom ring at the bottom of the inner filter shell, a pre-filter element inside the fixing bottom ring, four limiting support plates at the top of the fixing bottom ring, a fixing top ring at the top of the limiting support plates, and a filter paper tube outside the pre-filter element.

[0006] Preferably, the bottom of the fixed top ring is provided with a connecting slot adapted to the limiting support plate, and the fixed top ring is fixed to the limiting support plate by the connecting slot. The inside of the filter paper tube is provided with a connecting sleeve hole adapted to the fixed top ring, and the filter paper tube is sleeved on the outside of the fixed top ring and the limiting support plate by the connecting sleeve hole.

[0007] Preferably, the top of the fuel filter housing is provided with a first threaded tube, and the inside of the limiting clamp is provided with a first threaded groove adapted to the first threaded tube. The limiting clamp is threadedly connected to the first threaded tube by providing the first threaded groove.

[0008] Preferably, the top of the limiting housing is provided with a second threaded tube, and the interior of the closed top shell is provided with a second threaded groove adapted to the second threaded tube. The closed top shell is threadedly connected to the second threaded tube by providing the second threaded groove.

[0009] Preferably, the top of the sealed top shell is provided with an oil inlet pipe, and the bottom of the fuel filter housing is provided with an oil outlet pipe.

[0010] Preferably, the bottom of the filter element inner shell is provided with a bottom support plate, and the outer ring of the bottom support plate is uniformly provided with filter holes.

[0011] Preferably, the limiting support plate is disposed outside the fuel pre-filter element, and the top of the fuel pre-filter element is connected and fixed to the inner wall of the fixing top ring.

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

[0013] 1. This replaceable fuel filter has an inner housing that forms a filtration cavity through a bottom support plate and filter holes, facilitating rapid fuel discharge. A fixed bottom ring and a limiting support plate help to limit the position of the fuel pre-filter. The fuel pre-filter is quickly installed by a fixed top ring and a connecting slot with the limiting support plate, facilitating the initial filtration of fuel. The initially filtered fuel enters the filter paper tube through the gap in the limiting support plate for secondary filtration, which helps to improve the fuel filtration effect. The filter paper tube is fixed to the outside of the fixed top ring and the limiting support plate through the connecting sleeve hole.

[0014] 2. This replaceable fuel filter uses a limiting retainer to easily limit the fuel pre-filter and filter paper cylinder. Fuel is introduced through the inlet pipe and filtered fuel is discharged through the outlet pipe. The first threaded groove connects to the first threaded pipe thread to facilitate the limiting retainer to fix the fuel filter housing to the limiting retainer. The second threaded groove connects to the second threaded pipe thread to facilitate the limiting retainer to fix the closed top shell. This design allows for flexible disassembly and assembly, and facilitates the replacement of the filter element. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 3 This is an exploded view of the filter element assembly of this utility model;

[0018] Figure 4 This is a schematic diagram of the filter paper tube structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the partial explosion structure of this utility model.

[0020] In the diagram: 1. Fuel filter housing; 2. Limiting clip; 3. Sealed top shell; 4. Filter element assembly; 401. Inner shell of filter element; 402. Bottom support plate; 403. Filter hole; 404. Fixing bottom ring; 405. Limiting support plate; 406. Fixing top ring; 407. Connecting slot; 408. Fuel pre-filter element; 409. Filter paper tube; 410. Connecting sleeve hole; 5. Oil inlet pipe; 6. Oil outlet pipe; 7. First threaded pipe; 8. First threaded groove; 9. Second threaded pipe; 10. Second threaded groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4This utility model provides a technical solution: a replaceable fuel filter, including a fuel filter housing 1, a limiting retainer 2 on the top of the fuel filter housing 1, a closed top shell 3 on the top of the limiting retainer 2, a filter element assembly 4 inside the fuel filter housing 1, the filter element assembly 4 including a filter element inner shell 401, a fixing bottom ring 404 at the bottom of the filter element inner shell 401, a fuel pre-filter element 408 inside the fixing bottom ring 404, and four limiting supports on the top of the fixing bottom ring 404. The top of the limiting support plate 405 is provided with a fixing top ring 406. A filter paper tube 409 is provided outside the fuel pre-filter element 408. The bottom of the fixing top ring 406 is provided with a connecting groove 407 that matches the limiting support plate 405. The fixing top ring 406 is fixed to the limiting support plate 405 by the connecting groove 407. The inside of the filter paper tube 409 is provided with a connecting sleeve hole 410 that matches the fixing top ring 406. The filter paper tube 409 is fitted onto the fixing top ring 406 through the connecting sleeve hole 410. 6. Outside the limiting support plate 405, a bottom support plate 402 is provided at the bottom of the filter element inner shell 401. Filter holes 403 are evenly arranged on the outer ring of the bottom support plate 402. The limiting support plate 405 is set outside the fuel pre-filter element 408. The top of the fuel pre-filter element 408 is connected and fixed to the inner wall of the fixing top ring 406. The filter element inner shell 401 forms a filtering cavity through the bottom support plate 402 and the filter holes 403, facilitating rapid fuel discharge. The fixing bottom ring 404, in conjunction with the limiting support plate 405, facilitates the adjustment of the fuel pre-filter element 408. The fuel pre-filter element 408 is quickly installed with the limiting support plate 405 via the fixing top ring 406 and the connecting slot 407, facilitating the initial filtration of fuel. The initially filtered fuel enters the filter paper tube 409 through the gap of the limiting support plate 405 for secondary filtration, which helps to improve the fuel filtration effect. The filter paper tube 409 is fixed to the outside of the fixing top ring 406 and the limiting support plate 405 through the connecting sleeve hole 410. The limiting clip 2 facilitates the limiting of the fuel pre-filter element 408 and the filter paper tube 409.

[0023] The fuel filter housing 1 has a first threaded tube 7 on its top. The limiting retainer 2 has a first threaded groove 8 that matches the first threaded tube 7 inside. The limiting retainer 2 is threadedly connected to the first threaded tube 7 through the first threaded groove 8. The limiting retainer 2 has a second threaded tube 9 on its top. The sealed top housing 3 has a second threaded groove 10 that matches the second threaded tube 9 inside. The sealed top housing 3 is threadedly connected to the second threaded tube 9 through the second threaded groove 10. The sealed top housing 3 has an inlet pipe 5 on its top. The fuel filter housing 1 has an outlet pipe 6 on its bottom. Fuel is introduced through the inlet pipe 5 and filtered fuel is discharged through the outlet pipe 6. The threaded connection between the first threaded groove 8 and the first threaded tube 7 facilitates the limiting and fixing of the fuel filter housing 1 and the limiting retainer 2. The threaded connection between the second threaded groove 10 and the second threaded tube 9 facilitates the limiting retainer 2 and the sealed top housing 3. This allows for flexible disassembly and assembly, and facilitates the replacement of the filter element.

[0024] Working principle: First, the inner shell 401 of the filter element forms a filtration cavity through the bottom support plate 402 and the filter hole 403, facilitating rapid fuel discharge. The fixing bottom ring 404, together with the limiting support plate 405, helps to limit the fuel pre-filter element 408. The fuel pre-filter element 408 is quickly installed with the limiting support plate 405 through the fixing top ring 406 and the connecting groove 407, facilitating the initial filtration of fuel. The initially filtered fuel enters the filter paper cylinder 409 through the gap of the limiting support plate 405 for secondary filtration, which helps to improve the fuel filtration effect. The filter paper cylinder 409 passes through the connecting sleeve hole 410. Fixed to the outside of the fixed top ring 406 and the limiting support plate 405, the limiting clip 2 facilitates the limiting of the fuel pre-filter element 408 and the filter paper tube 409. Fuel is introduced through the inlet pipe 5 and filtered fuel is discharged through the outlet pipe 6. The first threaded groove 8 and the first threaded pipe 7 are threadedly connected to the fuel filter housing 1 to the limiting clip 2 for limiting and fixing. The second threaded groove 10 and the second threaded pipe 9 are threadedly connected to the limiting clip 2 to the closed top shell 3 for limiting and fixing. This facilitates flexible disassembly and assembly and makes it convenient to replace the filter element. This completes the operation process of a replaceable filter element fuel filter.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A replaceable filter element fuel filter, characterized in that, The system includes a fuel filter housing (1), a limiting clip (2) on the top of the fuel filter housing (1), a closed top shell (3) on the top of the limiting clip (2), a filter element assembly (4) inside the fuel filter housing (1), the filter element assembly (4) including a filter element inner shell (401), a fixing bottom ring (404) at the bottom of the filter element inner shell (401), a fuel pre-filter element (408) inside the fixing bottom ring (404), four limiting support plates (405) on the top of the fixing bottom ring (404), a fixing top ring (406) on the top of the limiting support plates (405), and a filter paper tube (409) outside the fuel pre-filter element (408).

2. A replaceable filter element fuel filter according to claim 1, characterized in that: The bottom of the fixed top ring (406) is provided with a connecting slot (407) that is compatible with the limiting support plate (405). The fixed top ring (406) is fixed to the limiting support plate (405) by the connecting slot (407). The inside of the filter paper tube (409) is provided with a connecting sleeve hole (410) that is compatible with the fixed top ring (406). The filter paper tube (409) is sleeved on the outside of the fixed top ring (406) and the limiting support plate (405) by the connecting sleeve hole (410).

3. A replaceable filter element fuel filter according to claim 1, characterized in that: The top of the fuel filter housing (1) is provided with a first threaded tube (7), and the inside of the limiting clamp (2) is provided with a first threaded groove (8) that is adapted to the first threaded tube (7). The limiting clamp (2) is threadedly connected to the first threaded tube (7) by providing the first threaded groove (8).

4. A replaceable filter element fuel filter according to claim 1, characterized in that: The top of the limiting housing (2) is provided with a second threaded tube (9), and the interior of the closed top shell (3) is provided with a second threaded groove (10) that is compatible with the second threaded tube (9). The closed top shell (3) is threadedly connected to the second threaded tube (9) by providing the second threaded groove (10).

5. A replaceable filter element fuel filter according to claim 1, characterized in that: The top of the closed top shell (3) is provided with an oil inlet pipe (5), and the bottom of the fuel filter housing (1) is provided with an oil outlet pipe (6).

6. A replaceable filter element fuel filter according to claim 1, characterized in that: The bottom of the filter inner shell (401) is provided with a bottom support plate (402), and the outer ring of the bottom support plate (402) is uniformly provided with filter holes (403).

7. A replaceable filter element fuel filter according to claim 1, characterized in that: The limiting support plate (405) is disposed outside the fuel pre-filter (408), and the top of the fuel pre-filter (408) is connected and fixed to the inner wall of the fixing top ring (406).

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