Fuel filter capable of reducing replacement frequency

Abstract

The utility model discloses a fuel filter capable of reducing replacement frequency, which belongs to the field of fuel filters and comprises an outer shell and a top cover, a lower convex ring is arranged below the outer side of the outer shell, the top of the outer shell is open, the top cover is arranged above the outer shell, an oil inlet pipe is arranged at the top of the top cover, an oil outlet pipe is arranged on one side of the outer shell, and an oil outlet pipe is arranged on the other side of the outer shell. A sealing plug is arranged on the lower surface of the top cover, the sealing plug seals the opening in the top of the outer shell, the surface of the sealing plug is sleeved with a sealing ring, extending tables are symmetrically arranged on the two sides of the top cover, sliding rods are vertically arranged below the extending tables, and the bottoms of the sliding rods penetrate through the lower protruding ring. When replacement is needed, the shell can be opened, the internal paper core can be independently replaced, so that the overall replacement frequency of the filter is reduced, the maintenance cost of a whole fuel system is reduced, meanwhile, sealing can be achieved through mutual extrusion during installation, and real-time limiting during mutual extrusion of the shell and the top cover is kept.

Description

Technical Field

[0001] The utility model relates to the field of fuel filters, and more specifically to a fuel filter with reduced replacement frequency. Background Art

[0002] The function of the fuel filter is to filter out harmful particles and moisture in the engine's fuel and gas system to protect the normal operation of the oil pump nozzle, cylinder liner, piston ring, etc., while reducing wear and avoiding blockage. It removes solid debris such as iron oxide and dust contained in the fuel to prevent fuel system blockage, reduce mechanical wear, ensure stable engine operation, and improve reliability. During use, the fuel will enter the filter and be filtered through the internal pleated filter paper. Therefore, after long-term use, a large amount of debris will inevitably adhere to the surface of the filter paper, which leads to the need to replace the filter regularly. Existing filters are mostly one-piece structures, and they need to be replaced as a whole when replacing the filter. What really needs to be replaced is the filter paper. Replacing the entire filter will increase costs. Utility Model Content

[0003] 1. Technical issues to be solved

[0004] In view of the problems existing in the prior art, the purpose of the utility model is to provide a fuel filter with reduced replacement frequency, which can realize the replacement of the filter paper inside the filter separately to reduce the overall replacement frequency and reduce the maintenance cost.

[0005] 2. Technical solution

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A fuel filter that reduces the frequency of replacement, comprises an outer shell and a top cover, wherein a lower convex ring is arranged at the lower outer side of the outer shell, the top of the outer shell is open, the top cover is placed above the outer shell, an oil inlet pipe is arranged on the top of the top cover, an oil outlet pipe is arranged on one side of the outer shell, a sealing plug is arranged on the lower surface of the top cover, the sealing plug seals the top opening of the outer shell, a sealing ring is sleeved on the surface of the sealing plug, extension platforms are symmetrically arranged on both sides of the top cover, a sliding rod is vertically arranged below the extension platform, the bottom of the sliding rod passes through the lower convex ring, and limiting bosses are evenly arranged below the surface of one side of the sliding rod close to each other, and storage holes are symmetrically and laterally opened on the inner side of the main body below the outer shell, a wedge-shaped slider is slidably installed on the inner side of the storage hole, the end of the wedge-shaped slider is adapted to the limiting boss, and the upper surface of the end of the wedge-shaped slider close to the sliding rod is arranged as an inclined surface.

[0008] Furthermore, a movable cavity is provided at the center of the lower body of the outer shell, a connecting rod is provided on the side where the wedge-shaped sliders are close to each other, and an end of the connecting rod facing away from the wedge-shaped slider is placed inside the movable cavity.

[0009] Furthermore, a spring is sleeved on the surface of the connecting rod, and the spring is placed inside the receiving hole, and one end of the spring is in contact with the end surface of the wedge-shaped sliding block.

[0010] Furthermore, an adjustment bolt is vertically screwed through the center of the lower surface of the outer shell, and an extrusion cone head is arranged on the top of the adjustment bolt. The extrusion cone head is truncated cone-shaped, and the ends of the two connecting rods that are close to each other are in contact with the surface of the extrusion cone head.

[0011] Furthermore, a toggle rod is vertically arranged on the lower surface of the wedge-shaped sliding block, and the toggle rod exceeds the lower surface of the outer shell.

[0012] Furthermore, a center tube is arranged at the center of the lower surface of the sealing plug, the center tube is connected with the oil inlet pipe, and filter paper is fixed on the surface of the center tube.

[0013] Furthermore, a mounting ring is provided on the outer surface of the housing, and a fixing ear plate is symmetrically provided on one side of the mounting ring.

[0014] 3. Beneficial effects

[0015] Compared with the prior art, the utility model has the following advantages: the utility model provides a fuel filter with reduced replacement frequency. The filter adopts a split structure. When replacement is needed, the shell can be opened and the internal paper core can be replaced separately to reduce the replacement frequency of the entire filter and reduce the maintenance cost of the entire fuel system. At the same time, sealing can be achieved by mutual squeezing during installation, and real-time limit can be maintained when the shell and the top cover are squeezed against each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a longitudinal cross-sectional structural schematic diagram of the utility model;

[0018] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of area A;

[0019] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure of area B.

[0020] Explanation of the numbers in the figure: 1. outer shell; 101. lower convex ring; 2. top cover; 3. oil inlet pipe; 4. oil outlet pipe; 5. mounting ring; 6. fixing ear plate; 7. extension platform; 8. slide rod; 801. limit boss; 9. sealing plug; 10. sealing ring; 11. center tube; 12. filter paper; 13. storage hole; 14. wedge-shaped slider; 15. toggle rod; 16. connecting rod; 17. spring; 18. movable cavity; 19. adjustment bolt; 20. extrusion cone head. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-Figure 4 As shown, a fuel filter with reduced replacement frequency includes an outer shell 1 and a top cover 2. A lower convex ring 101 is provided at the lower outer side of the outer shell 1 to increase the size of the bottom of the outer shell 1, so that the slide bar 8 can be limited so that it can only move in the vertical direction. The top of the outer shell 1 is open, and the top cover 2 is placed above the outer shell 1. An oil inlet pipe 3 is provided on the top of the top cover 2, and an oil outlet pipe 4 is provided on one side of the outer shell 1. A sealing plug 9 is provided on the lower surface of the top cover 2. The bottom of the sealing plug 9 is a conical surface for easy guidance. The sealing plug 9 is sealed to the top opening of the outer shell 1. A sealing ring 10 is sleeved on the surface of the sealing plug 9. When the sealing plug 9 completely enters the inner part of the outer shell 1, it can be passed through By squeezing the sealing ring 10, the sealing performance is increased, extension platforms 7 are symmetrically arranged on both sides of the top cover 2, and a slide bar 8 is vertically arranged below the extension platform 7. The bottom of the slide bar 8 passes through the lower convex ring 101, and limiting bosses 801 are evenly arranged below the surface of the side where the slide bars 8 are close to each other. The lower surface of the limiting boss 801 is an inclined surface, and a storage hole 13 is symmetrically and laterally opened on the inner side of the main body below the outer shell 1. A wedge-shaped slider 14 is slidably installed on the inner side of the storage hole 13, and the end of the wedge-shaped slider 14 is adapted to the limiting boss 801. Through the mutual cooperation of the two, it is ensured that the slide bar 8 can only move downward and can be limited in real time. The upper surface of the end of the wedge-shaped slider 14 close to the slide bar 8 is set as an inclined surface.

[0024] Please refer to Figure 2 and Figure 3As shown, a movable cavity 18 is opened at the center of the lower body of the outer shell 1, and a connecting rod 16 is provided on the side where the wedge-shaped sliders 14 are close to each other. The end of the connecting rod 16 facing away from the wedge-shaped slider 14 is placed inside the movable cavity 18, and a spring 17 is sleeved on the surface of the connecting rod 16. The spring 17 is placed inside the storage hole 13, and one end of the spring 17 is in contact with the end surface of the wedge-shaped slider 14. The elastic force of the spring 17 is used to make the wedge-shaped slider 14 have an outward thrust, and then always cooperate with the limiting boss 801 at the corresponding position to achieve real-time limiting.

[0025] Among them, an adjusting bolt 19 is vertically screwed through the center of the lower surface of the outer shell 1, and an extrusion cone head 20 is arranged on the top of the adjusting bolt 19. The extrusion cone head 20 is truncated cone-shaped, and the ends of the two connecting rods 16 that are close to each other are in contact with the surface of the extrusion cone head 20. Screwing up the adjusting bolt 19 can squeeze the connecting rod 16, increase the strength of the wedge-shaped slider 14 and the limiting boss 801, and prevent loose fitting due to guidance during work.

[0026] Please refer to Figure 3 As shown, a toggle rod 15 is vertically arranged on the lower surface of the wedge-shaped slider 14, and the toggle rod 15 exceeds the lower surface of the outer shell 1, so that the wedge-shaped slider 14 can be toggled toward the center through the bottom to achieve separation.

[0027] Please refer to Figure 1 As shown, a center tube 11 is provided at the center of the lower surface of the sealing plug 9 , the center tube 11 is connected with the oil inlet pipe 3 , and a filter paper 12 is fixed on the surface of the center tube 11 .

[0028] Please refer to Figure 1 As shown, a mounting ring 5 is provided on the outer surface of the outer shell 1, and a fixing ear plate 6 is symmetrically provided on one side of the mounting ring 5 to facilitate the installation and fixing of the filter as a whole.

[0029] Working principle: Due to the presence of the spring 17, the two wedge-shaped sliders 14 have a force that deviates from each other, and then the inclined surface at the end of the wedge-shaped slider 14 cooperates with the limiting boss 801. When cleaning is needed, the adjustment bolt 19 can be rotated downward so that the extrusion cone head 20 no longer squeezes the connecting rod 16, and at the same time, the two toggle rods 15 are moved closer to make the wedge-shaped slider 14 shrink toward the inside of the storage hole 13 and no longer cooperate with the limiting boss 801. At this time, the outer shell 1 and the top cover 2 can be disassembled to facilitate cleaning or replacement of the filter paper 12. The top cover 2 and the outer shell 1 are docked, so that the extension platform 7 passes through the lower convex ring 101 and moves downward. The outer shell 1 and the top cover 2 are pressed to achieve real-time limiting through the cooperation of the wedge-shaped slider 14 and the limiting boss 801, so that the sealing plug 9 enters the interior of the outer shell 1 and squeezes the sealing ring 10 to ensure effective sealing of the outer shell 1, and then the adjusting bolt 19 is rotated upward to drive the extrusion cone head 20 to move upward, and the connecting rods 16 on both sides are squeezed at the same time through the extrusion cone head 20 to improve the stability of the cooperation between the wedge-shaped slider 14 and the limiting boss 801.

[0030] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A fuel filter with reduced replacement frequency, comprising an outer shell (1) and a top cover (2), characterized in that: A lower convex ring (101) is arranged at the lower part of the outer side of the outer shell (1); the top of the outer shell (1) is open; the top cover (2) is placed above the outer shell (1); an oil inlet pipe (3) is arranged at the top of the top cover (2); an oil outlet pipe (4) is arranged at one side of the outer shell (1); a sealing plug (9) is arranged on the lower surface of the top cover (2); the sealing plug (9) is sealed to the top opening of the outer shell (1); a sealing ring (10) is sleeved on the surface of the sealing plug (9); extension platforms (7) are symmetrically arranged on both sides of the top cover (2); A slide bar (8) is vertically arranged below the extension platform (7), the bottom of the slide bar (8) passes through the lower convex ring (101), and a limiting boss (801) is evenly arranged below the surface of the slide bar (8) on the side close to each other. A storage hole (13) is symmetrically and laterally opened on the inner side of the main body below the outer shell (1), and a wedge-shaped slider (14) is slidably installed inside the storage hole (13), and the end of the wedge-shaped slider (14) is adapted to the limiting boss (801), and the upper surface of the end of the wedge-shaped slider (14) close to the slide bar (8) is set as an inclined surface.

2. A fuel filter with reduced replacement frequency according to claim 1, characterized in that: A movable cavity (18) is provided at the center of the lower body of the outer shell (1), a connecting rod (16) is provided on the side where the wedge-shaped sliders (14) are close to each other, and an end of the connecting rod (16) facing away from the wedge-shaped sliders (14) is placed inside the movable cavity (18).

3. A fuel filter with reduced replacement frequency according to claim 2, characterized in that: The surface of the connecting rod (16) is sleeved with a spring (17), which is placed inside the receiving hole (13), and one end of the spring (17) is in contact with the end surface of the wedge-shaped sliding block (14).

4. A fuel filter with reduced replacement frequency according to claim 3, characterized in that: An adjusting bolt (19) is vertically screwed through the center of the lower surface of the outer shell (1), and an extrusion cone head (20) is arranged on the top of the adjusting bolt (19). The extrusion cone head (20) is in a truncated cone shape, and the ends of the two connecting rods (16) that are close to each other are in contact with the surface of the extrusion cone head (20).

5. A fuel filter with reduced replacement frequency according to claim 1, characterized in that: A toggle rod (15) is vertically arranged on the lower surface of the wedge-shaped sliding block (14), and the toggle rod (15) protrudes from the lower surface of the outer shell (1).

6. A fuel filter with reduced replacement frequency according to claim 1, characterized in that: A central tube (11) is arranged at the center of the lower surface of the sealing plug (9), the central tube (11) is connected to the oil inlet pipe (3), and filter paper (12) is fixed on the surface of the central tube (11).

7. A fuel filter with reduced replacement frequency according to claim 1, characterized in that: The outer surface of the outer shell (1) is provided with a mounting ring (5), and one side of the mounting ring (5) is symmetrically provided with a fixing ear plate (6).

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