Double-layer filtering fuel filter

Abstract

The utility model discloses a double-layer filtering fuel filter, relates to the technical field of filters, solves the problem that an existing device is inconvenient to disassemble and use, and adopts the following scheme that a top cover is assembled on the top surface of a shell, and the double-layer filtering fuel filter is arranged through a placing groove, a clamping groove and a threaded groove, so that the fuel filter is convenient to disassemble and use. During use, the filter sleeve is mounted in the placement groove through the interior of the shell, the top cover is covered, the filter sleeve is clamped in the clamping groove, and then the filter sleeve is rotatably mounted on the shell through the threads on the top cover, so that the mounting and the dismounting are simple and convenient, and meanwhile, due to the arrangement of the oil inlet cavity, the filter cavity and the filter sleeve, the outer wall areas of the filter sleeve A and the filter sleeve B are large; fuel oil enters the oil inlet cavity A through the oil inlet hole and flows into the oil inlet cavity B, then the fuel oil flows into the filter cavity, and the contact area of the filter cavity and the outer wall of the filter sleeve A is large, so that the filter areas of the filter sleeve A and the filter sleeve B are increased, the filter sleeve A and the filter sleeve B are prevented from being blocked, the filter sleeve A and the filter sleeve B do not need to be cleaned frequently, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of filters, in particular to a double-layer filtering fuel filter. Background Art

[0002] There are three types of fuel filters, namely diesel filters, gasoline filters and natural gas filters. They are pipes connected between the fuel pump and the throttle valve inlet. The fuel filter is mainly used to filter solid impurities contained in the fuel, which can not only greatly reduce wear and tear, but also avoid blockage.

[0003] After searching, the application with patent publication number CN215719168U discloses a fuel filter screen, including a shell and a filter assembly, the circumferential outer wall of the upper port of the shell is fixedly connected with an upper connecting ring, a top cover is provided above the shell, a connecting rod is movably connected to the center of the top cover, a filter hole is opened in the middle of the top cover, a bottom plate is provided below the shell, the bottom end of the connecting rod is rotatably connected to the upper thread of the bottom plate, so that the filter can be easily disassembled, and the filter screen inside the filter can be disassembled, cleaned or replaced.

[0004] However, due to the setting of the connecting rod, the filter layer is set on the connecting rod, which results in the filter layer being fixed on the connecting rod only by other components to prevent it from sliding, which makes it inconvenient to remove the filter layer from the connecting rod, and the installation and disassembly are inconvenient. At the same time, since the filter layer is arranged horizontally and the area of ​​the filter layer is small, the filtered impurities are accumulated on the filter layer, which easily causes the filter layer to be blocked, and the service life of the filter layer is short, and the filter layer needs to be cleaned frequently.

[0005] Therefore, we proposed a double-layer filtration fuel filter. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a double-layer filtering fuel filter, which solves the problems of inconvenient disassembly and use of the prior device.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a double-layer filtration fuel filter, comprising a shell, a bottom cover is fixedly installed on the bottom of the shell, and a top cover with matching specifications is installed on the top surface of the shell;

[0008] The top surface of the bottom cover is provided with an annular placement groove A and a placement groove B which are opposite to each other, the interior of the shell is equipped with filter sleeves A and B which are respectively matched with the placement groove A and the placement groove B, the top side of the outer wall of the shell is provided with a thread groove, the bottom side of the inner wall of the top cover is provided with a thread which is matched with the specification, the bottom surface of the top cover is provided with a holder which is matched with the specification, and the bottom surface of the holder is provided with a holder A and a holder B which are matched with the specification and opposite to each other;

[0009] An oil inlet hole is provided on the top surface of the top cover, and an oil inlet pipe connected to the oil inlet hole is installed on the top surface of the top cover. An oil inlet cavity A is installed between the top surface of the base and the bottom surface of the top cover, an oil inlet cavity B is provided between the outer wall of the base and the inner wall of the top cover, and the oil inlet cavity A is connected to the oil inlet cavity B. A filter cavity is provided between the filter sleeve A and the outer shell, and the oil inlet cavity B is opposite to and connected to the filter cavity. An oil outlet hole matching the specification of the filter sleeve B is provided on the top surface of the bottom cover, and a connected oil outlet pipe is installed on the bottom surface of the bottom cover.

[0010] Preferably, six groups of connecting rods in opposite positions are fixedly installed between the outer wall of the card base and the inner wall of the top cover, which can improve the stability and firmness of the card base.

[0011] Preferably, the outer wall of the filter sleeve A is provided with evenly distributed filter holes A, and the outer wall of the filter sleeve B is provided with evenly distributed filter holes B, and the aperture of the filter holes A is larger than that of the filter holes B, so that double-layer filtration can be performed to improve the filtration effect and prevent clogging.

[0012] Preferably, sealing gaskets are installed on the inner walls of the placement groove A and the placement groove B, so as to improve the sealing between the bottom cover and the filter sleeve.

[0013] Preferably, sealing gaskets are installed on the inner walls of the card slot A and the card slot B, so as to improve the sealing between the card seat and the filter sleeve.

[0014] Preferably, the bottom surface of the top cover is equipped with a sealing gasket of matching specifications, which can improve the sealing between the top cover and the outer shell and prevent oil leakage.

[0015] 1. This double-layer filter fuel filter, through the arrangement of the placement groove, the clamping groove and the thread groove, first installs the filter sleeve in the placement groove through the inside of the shell, then covers the top cover, clamps the filter sleeve in the clamping groove, and then rotates and installs it on the shell through the thread on the top cover. The installation and disassembly are simple and convenient.

[0016] 2. At the same time, through the setting of the oil inlet chamber, the filter chamber and the filter sleeve, the outer wall area of ​​the filter sleeve A and the filter sleeve B is large. The fuel enters the oil inlet chamber A through the oil inlet hole and flows into the oil inlet chamber B, and then flows into the filter chamber. The contact area between the filter chamber and the outer wall of the filter sleeve A is large, thereby increasing the filter area of ​​the filter sleeve A and the filter sleeve B, preventing them from being blocked, and they do not need to be cleaned frequently, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the bottom cover of the utility model;

[0019] Figure 3 It is a schematic diagram of the structure of the top cover of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the card holder of the utility model.

[0021] In the figure: 1. outer shell; 2. bottom cover; 3. top cover; 4. oil inlet pipe; 5. oil outlet pipe; 6. placement groove A; 7. placement groove B; 8. oil outlet hole; 9. filter sleeve A; 10. filter hole A; 11. filter sleeve B; 12. filter hole B; 13. threaded groove; 14. thread; 15. holder; 16. slot A; 17. slot B; 18. oil inlet hole; 19. oil inlet chamber A; 20. oil inlet chamber B; 21. connecting rod; 22. filter chamber. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Figure 1-4As shown: the top surface of the bottom cover 2 is provided with a placement groove A6 and a placement groove B7 which are opposite and annular, the interior of the outer shell 1 is equipped with a filter sleeve A9 and a filter sleeve B11 which are respectively matched with the placement groove A6 and the placement groove B7, the top side of the outer wall of the outer shell 1 is provided with a thread groove 13, the bottom side of the inner wall of the top cover 3 is equipped with a thread 14 which is matched with the specification, the bottom surface of the top cover 3 is equipped with a holder 15 which is matched with the specification, and the bottom surface of the holder 15 is provided with a clamping groove A16 and a clamping groove B17 which are matched with the specification and opposite to each other, through the setting of the placement groove, the clamping groove and the thread groove 13, the filter sleeve is first installed in the placement groove through the interior of the outer shell 1, and then the top cover 3 is covered, the filter sleeve is clamped in the clamping groove, and then it is rotated and installed on the outer shell 1 through the thread 14 on the top cover 3, and the installation and disassembly are simple and convenient.

[0024] Example 2: Figure 2-4 As shown: an oil inlet hole 18 is provided on the top surface of the top cover 3, and an oil inlet pipe 4 connected to the oil inlet hole 18 is installed on the top surface of the top cover 3. An oil inlet cavity A19 is installed between the top surface of the base 15 and the bottom surface of the top cover 3. An oil inlet cavity B20 is provided between the outer wall of the base 15 and the inner wall of the top cover 3. The oil inlet cavity A19 is connected to the oil inlet cavity B20. A filter cavity 22 is provided between the filter sleeve A9 and the housing 1. The positions of the oil inlet cavity B20 and the filter cavity 22 are opposite and connected. The top surface of the bottom cover 2 is provided with a filter sleeve B11 that matches the specifications of the filter sleeve B11. The oil outlet hole 8 and the bottom surface of the bottom cover 2 are equipped with a connected oil outlet pipe 5. Through the arrangement of the oil inlet cavity, the filter cavity 22 and the filter sleeve, the outer wall area of ​​the filter sleeve A9 and the filter sleeve B11 is large. The fuel enters the oil inlet cavity A19 through the oil inlet hole 18 and flows into the oil inlet cavity B20, and then flows into the filter cavity 22. The contact area between the filter cavity 22 and the outer wall of the filter sleeve A9 is large, thereby increasing the filter area of ​​the filter sleeve A9 and the filter sleeve B11, preventing them from being blocked, and they do not need to be cleaned frequently, which is convenient to use.

[0025] Example 3: Figure 2-3 As shown, six groups of connecting rods 21 are fixedly installed between the outer wall of the card holder 15 and the inner wall of the top cover 3, so as to improve the stability and firmness of the card holder 15.

[0026] The working principle and use process of the utility model are as follows: when the device is required to work, the filter sleeve is first installed in the placement groove through the inside of the shell 1, and then the top cover 3 is covered, the filter sleeve is clamped in the clamping groove, and then the thread 14 on the top cover 3 is rotated and installed on the shell 1. The installation and disassembly are simple and convenient. At the same time, the fuel enters the oil inlet cavity A19 through the oil inlet hole 18 and flows into the oil inlet cavity B20, and then the fuel flows into the filter cavity 22. The contact area between the filter cavity 22 and the outer wall of the filter sleeve A9 is large, thereby increasing the filtering area of ​​the filter sleeve A9 and the filter sleeve B11 to prevent them from being blocked. They do not need to be cleaned frequently, and are easy to use.

[0027] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A double-layer fuel filter, comprising a housing (1), a bottom cover (2) being fixedly mounted on the bottom of the housing (1), and a top cover (3) of matching specifications being mounted on the top surface of the housing (1); Features: The top surface of the bottom cover (2) is provided with an annular placement groove A (6) and a placement groove B (7) which are opposite to each other; the interior of the outer shell (1) is provided with a filter sleeve A (9) and a filter sleeve B (11) which are respectively matched to the placement groove A (6) and the placement groove B (7); the top side of the outer wall of the outer shell (1) is provided with a thread groove (13); the bottom side of the inner wall of the top cover (3) is provided with a thread (14) which is matched to the specification; the bottom surface of the top cover (3) is provided with a holder (15) which is matched to the specification; the bottom surface of the holder (15) is provided with a holder groove A (16) and a holder groove B (17) which are matched to the specification and opposite to each other; An oil inlet hole (18) is formed on the top surface of the top cover (3), and an oil inlet pipe (4) connected to the oil inlet hole (18) is mounted on the top surface of the top cover (3). An oil inlet cavity A (19) is mounted between the top surface of the holder (15) and the bottom surface of the top cover (3). An oil inlet cavity B (20) is formed between the outer wall of the holder (15) and the inner wall of the top cover (3), and the oil inlet cavity A (19) is connected to the oil inlet cavity B (20). A filter cavity (22) is formed between the filter sleeve A (9) and the housing (1), and the oil inlet cavity B (20) and the filter cavity (22) are positioned opposite to and connected to each other. An oil outlet hole (8) matching the specifications of the filter sleeve B (11) is formed on the top surface of the bottom cover (2), and a connected oil outlet pipe (5) is mounted on the bottom surface of the bottom cover (2).

2. A double-layer fuel filter according to claim 1, characterized in that: Six groups of connecting rods (21) in opposite positions are fixedly mounted between the outer wall of the card seat (15) and the inner wall of the top cover (3).

3. A double-layer fuel filter according to claim 1, characterized in that: The outer wall of the filter sleeve A (9) is provided with evenly distributed filter holes A (10), and the outer wall of the filter sleeve B (11) is provided with evenly distributed filter holes B (12), and the pore diameter of the filter holes A (10) is larger than that of the filter holes B (12).

4. A double-layer fuel filter according to claim 1, characterized in that: Sealing gaskets are installed on the inner walls of the placement groove A (6) and the placement groove B (7).

5. A double-layer fuel filter according to claim 1, characterized in that: Sealing gaskets are mounted on the inner walls of the card slot A (16) and the card slot B (17).

6. A double-layer fuel filter according to claim 1, characterized in that: The bottom surface of the top cover (3) is equipped with a sealing gasket of matching specifications.

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