A quick-washing filter screen automobile electronic fuel pump

Abstract

The utility model relates to the technical field of automobile fuel pump, especially to a quick cleaning filter screen automobile electronic fuel pump. Its technical scheme includes: fuel pump body, be equipped with the pump cover on the fuel pump body, the inner wall annular array of fuel pump body is equipped with a plurality of limit stop, the inner wall of pump cover is equipped with the installation groove, the filter screen box is connected in the pump cover, the installation groove is connected with extrusion frame, the extrusion frame is fixedly installed in the installation groove through the ejection spring, the fuel pump body is connected with fuel delivery pipe, the pump cover is connected with the oil pipe, the fuel pump body and pump cover all are equipped with threaded hole, the threaded hole is installed with bolt, the fuel pump body and pump cover are connected through bolt. The utility model satisfies the automobile electronic fuel pump filter screen dismounts and washes, when dismounting and washing, the filter screen box can be ejected through the ejection spring after the pump cover unfolding, avoids the inconvenience caused by taking out after dismounting still needing complex tools.

Description

Technical Field

[0001] This utility model relates to the field of automotive fuel pump technology, specifically to an automotive electronic fuel pump with a filter that can be quickly cleaned. Background Technology

[0002] As an indispensable core component of the fuel supply system in electronically controlled fuel injection vehicles, the electronic fuel pump's operation directly affects the stability of fuel supply and the normal operation of the engine. Driven by an electric motor, this component is primarily responsible for the crucial function of precisely delivering fuel from the fuel tank to the engine and continuously maintaining stable fuel pressure, making it a vital link in ensuring the efficient operation of the vehicle's powertrain.

[0003] A patent search revealed a patent for an automotive electronic fuel pump with a quickly cleanable filter. While this device allows the pump body and cover to move closer and further apart during use, facilitating disassembly and assembly, in practice, maintenance requires specialized tools to remove the filter mechanism after separating the pump body and cover. The filter mechanism does not automatically pop out after the pump body and cover are unfolded, increasing the complexity of the operation and causing significant inconvenience for personnel during removal, cleaning, and subsequent maintenance, severely impacting maintenance efficiency. Therefore, optimizing and improving the structure of automotive electronic fuel pumps is of significant practical importance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides an automotive electronic fuel pump with a quickly cleanable filter, thus solving the problems mentioned in the background section.

[0005] The solution of this utility model to the above-mentioned technical problems is as follows:

[0006] An automotive electronic fuel pump with a quickly cleanable filter screen includes a fuel pump body, on which a pump cover is provided;

[0007] The inner wall of the fuel pump body is equipped with a number of limiting blocks arranged in a ring array. The inner wall of the pump cover is provided with an installation groove. A filter box is fitted inside the pump cover. A compression frame is fitted inside the installation groove. The compression frame is fixedly installed in the installation groove by a push-out spring.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, a fuel delivery pipe is connected to the fuel pump body, and an oil guide pipe is connected to the pump cover.

[0010] The beneficial effects of adopting the above-mentioned further solutions are:

[0011] The fuel delivery pipe and the fuel guide pipe enable the flow of fuel between the inside of the fuel pump body and the external fuel system, forming a complete fuel delivery path. This ensures that the fuel can enter the engine and participate in combustion according to the predetermined route, achieving directional delivery of filtered fuel.

[0012] Furthermore, both the fuel pump body and the pump cover are provided with threaded holes, and bolts are installed in the threaded holes. The fuel pump body and the pump cover are connected by bolts, and sealing gaskets are fitted at the connection between the fuel pump body and the pump cover.

[0013] The beneficial effects of adopting the above-mentioned further solutions are:

[0014] The fuel pump body and pump cover are detachably connected by bolts and threaded holes, which facilitates the cleaning or replacement of the internal filter box later. The sealing gasket can effectively enhance the sealing of the connection, prevent fuel leakage during transportation, and avoid fuel waste and safety hazards.

[0015] Furthermore, the fuel pump body is provided with an identification plate, which is fixedly installed on the outer surface of the fuel pump body.

[0016] The beneficial effects of adopting the above-mentioned further solutions are:

[0017] The label can indicate the fuel pump's model, specifications, rated parameters, production information, etc., making it easier for operators to understand the basic information of the equipment, facilitating the installation, maintenance and management of the equipment, and also providing convenience for equipment traceability.

[0018] Furthermore, one end of the filter box is fitted into the mounting groove, and the end of the filter box facing away from the mounting groove is limited by a limiting block.

[0019] The beneficial effects of adopting the above-mentioned further solutions are:

[0020] The filter box is bidirectionally fixed by the cooperation of the mounting groove and the limiting block, ensuring that the filter box will not be displaced or shaken during the operation of the fuel pump, thus ensuring that the filter can stably filter the fuel and improving the reliability of the filtration effect.

[0021] Furthermore, the extrusion frame squeezes and limits the opening of the filter box, and a sealing ring is fitted at the connection between the extrusion frame and the filter box.

[0022] The beneficial effects of adopting the above-mentioned further solutions are:

[0023] The compression frame compresses the opening of the filter box, further enhancing the stability of the filter box installation; the sealing ring prevents unfiltered fuel from bypassing the filter screen and directly entering the subsequent fuel line through the gap at the connection, ensuring that the fuel is filtered.

[0024] Furthermore, a connecting rod is fixedly installed on the extrusion frame, and a guide rod is slidably sleeved inside the connecting rod. The end of the guide rod away from the connecting rod is fixedly installed in the mounting groove.

[0025] The beneficial effects of adopting the above-mentioned further solutions are:

[0026] When the ejector spring drives the extrusion frame to move, the cooperation between the guide rod and the connecting rod can provide guidance for the movement of the extrusion frame, ensuring that the extrusion frame moves smoothly in a fixed direction, avoiding deviation or jamming of the extrusion frame during movement, and ensuring that the ejector spring can smoothly eject the filter box, thus improving the convenience of filter box disassembly.

[0027] This invention provides an automotive electronic fuel pump with a quickly cleanable filter screen. It offers the following advantages:

[0028] The fuel pump body and pump cover are detachable via bolted connections. Combined with the synergistic action of the ejector spring, compression bracket, guide rod, and connecting rod, the ejector spring automatically pushes out the filter box after the pump cover is removed. This allows for easy removal of the filter box without the need for complex tools, significantly reducing the time required for filter removal. Furthermore, the independent structure of the filter box allows for direct and thorough cleaning by operators, solving the problem of traditional fuel pump filters requiring specialized tools for disassembly and cleaning, and greatly improving the convenience of filter maintenance.

[0029] The filter box achieves bidirectional stable positioning through mounting slots and limiting blocks, while the compression bracket further compresses and secures its opening. Combined with the sealing effect of the sealing ring, this effectively prevents unfiltered fuel from bypassing the filter and entering subsequent fuel lines, ensuring that fuel is filtered before entering the engine. Simultaneously, the stable installation structure prevents the filter box from shaking during fuel pump operation, thus maintaining consistent filtration performance. This provides the engine with clean fuel, reduces wear from impurities, and helps extend engine life. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0031] In the attached diagram:

[0032] Figure 1 This is a front view schematic diagram of the present invention;

[0033] Figure 2 This is an exploded view of the present invention;

[0034] Figure 3 This is a schematic diagram of the installation of the limiting block of this utility model;

[0035] Figure 4 This is a cross-sectional schematic diagram of the pump cover of this utility model;

[0036] Figure 5 This utility model Figure 4 Enlarged diagram of A in the middle;

[0037] Figure 6 This is a schematic diagram of the mounting slot of this utility model.

[0038] The attached diagram lists the components represented by each number as follows:

[0039] 1. Fuel pump body; 101. Fuel delivery pipe; 102. Identification plate; 103. Limiting block; 2. Threaded hole; 3. Pump cover; 301. Fuel guide pipe; 302. Bolt; 303. Mounting groove; 4. Sealing gasket; 5. Filter screen box; 6. Extrusion frame; 601. Ejection spring; 602. Guide rod; 603. Connecting rod. Detailed Implementation

[0040] 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.

[0041] Please see Figures 1 to 6 As shown, the embodiments provided by this utility model are as follows:

[0042] An automotive electronic fuel pump with a quick-cleaning filter includes a fuel pump body 1, on which a pump cover 3 is provided;

[0043] The inner wall of the fuel pump body 1 is equipped with a number of limiting blocks 103 in a ring array. The inner wall of the pump cover 3 is provided with an installation groove 303. A filter box 5 is sleeved inside the pump cover 3. A compression frame 6 is sleeved inside the installation groove 303. The compression frame 6 is fixedly installed in the installation groove 303 by a push-out spring 601.

[0044] A fuel delivery pipe 101 is connected to the fuel pump body 1, and an oil guide pipe 301 is connected to the pump cover 3. The fuel delivery pipe 101 and the oil guide pipe 301 respectively realize the flow of fuel in the fuel pump body 1 and the external fuel system, forming a complete fuel delivery path, ensuring that the fuel can enter the engine to participate in combustion according to the predetermined route, and realizing the directional delivery of the filtered fuel.

[0045] Both the fuel pump body 1 and the pump cover 3 are provided with threaded holes 2, and bolts 302 are installed in the threaded holes 2. The fuel pump body 1 and the pump cover 3 are connected by bolts 302. Sealing gaskets 4 are fitted at the connection between the fuel pump body 1 and the pump cover 3. The cooperation between the bolts 302 and the threaded holes 2 enables the fuel pump body 1 and the pump cover 3 to be detachably connected, which facilitates the cleaning or replacement of the internal filter box 5 in the future. The sealing gaskets 4 can effectively enhance the sealing of the connection, prevent fuel leakage during the delivery process, and avoid fuel waste and safety hazards.

[0046] The fuel pump body 1 is equipped with an identification plate 102, which is fixedly installed on the outer surface of the fuel pump body 1. The identification plate 102 can mark the fuel pump model, specifications, rated parameters, production information and other information, so that operators can understand the basic information of the equipment, facilitate the installation, maintenance and management of the equipment, and also provide convenience for the traceability of the equipment.

[0047] One end of the filter box 5 is fitted into the mounting groove 303, and the end of the filter box 5 away from the mounting groove 303 is limited by the limiting block 103. The filter box 5 is bidirectionally limited and fixed by the cooperation of the mounting groove 303 and the limiting block 103, ensuring that the filter box 5 will not be displaced or shaken during the operation of the fuel pump, ensuring that the filter can stably filter the fuel and improve the reliability of the filtration effect.

[0048] The extrusion frame 6 extrudes and limits the opening of the filter box 5. Sealing rings are installed at the connection between the extrusion frame 6 and the filter box 5. The extrusion frame 6 extrudes the opening of the filter box 5, which can further enhance the stability of the filter box 5 installation. The sealing ring can prevent unfiltered fuel from bypassing the filter screen and directly entering the subsequent fuel line from the gap at the connection, ensuring that the fuel is filtered.

[0049] A connecting rod 603 is fixedly installed on the extrusion frame 6. A guide rod 602 is slidably sleeved inside the connecting rod 603. One end of the guide rod 602 away from the connecting rod 603 is fixedly installed in the mounting groove 303. When the ejector spring 601 drives the extrusion frame 6 to move, the cooperation between the guide rod 602 and the connecting rod 603 can provide guidance for the movement of the extrusion frame 6, ensuring that the extrusion frame 6 moves smoothly in a fixed direction, avoiding the extrusion frame 6 from deviating or getting stuck during the movement, and ensuring that the ejector spring 601 can smoothly eject the filter box 5, thus improving the ease of disassembling the filter box 5.

[0050] Working principle: Fuel entry stage: External fuel enters the pump cover 3 through the fuel guide pipe 301 on the pump cover 3, and then flows to the fuel pump body 1, ready for filtration.

[0051] Fuel filtration stage: The fuel entering the fuel pump body 1 flows to the filter box 5. Since the filter box 5 is bidirectionally limited and fixed by the mounting groove 303 and the limiting block 103, and the extrusion frame 6 extrudes and limits its opening and seals it with the sealing ring, the fuel can only be filtered through the filter inside the filter box 5. Impurities are intercepted inside the filter box 5, and the filtered clean fuel enters the fuel pump body 1.

[0052] Fuel output stage: Clean fuel filtered by filter box 5 is drawn by fuel pump body 1 and flows out through fuel delivery pipe 101, enters external fuel system, and is finally delivered to engine for combustion.

[0053] Filter cleaning preparation stage: When the filter needs to be cleaned, unscrew the bolts 302 in the threaded holes 2 on the fuel pump body 1 and the pump cover 3, and remove the pump cover 3 from the fuel pump body 1.

[0054] Filter box 5 removal stage: After the pump cover 3 is removed, the ejector spring 601 in the mounting groove 303 returns to its elastic deformation, pushing the extrusion frame 6 to move. Under the guidance of the guide rod 602 and the connecting rod 603, the extrusion frame 6 moves smoothly and pushes the filter box 5 out of the mounting groove 303, making it convenient for the operator to remove the filter box 5.

[0055] Filter cleaning and reset stage: The operator cleans the removed filter box 5 to remove the impurities trapped inside; after cleaning, the filter box 5 is put back into the installation slot 303, the spring 601 is compressed in the reverse direction to reset the squeezing frame 6, and then the pump cover 3 and the fuel pump body 1 are reconnected and fixed by the bolt 302. At this time, the sealing gasket 4 ensures that the connection is sealed and the fuel pump returns to normal working condition.

[0056] Filter cleaning and reset stage: The operator cleans the removed filter box 5 to remove the impurities trapped inside; after cleaning, the filter box 5 is put back into the installation slot 303, the spring 601 is compressed in the reverse direction to reset the squeezing frame 6, and then the pump cover 3 and the fuel pump body 1 are reconnected and fixed by the bolt 302. At this time, the sealing gasket 4 ensures that the connection is sealed and the fuel pump returns to normal working condition.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automotive electronic fuel pump with a quickly cleanable filter screen, comprising a fuel pump body (1), wherein the fuel pump body (1) is provided with a pump cover (3), characterized in that: The inner wall of the fuel pump body (1) is equipped with a number of limiting blocks (103) arranged in a ring. The inner wall of the pump cover (3) is provided with an installation groove (303). A filter screen box (5) is sleeved inside the pump cover (3). A compression frame (6) is sleeved inside the installation groove (303). The compression frame (6) is fixedly installed in the installation groove (303) by a push-out spring (601).

2. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 1, characterized in that: The fuel pump body (1) is connected to a fuel delivery pipe (101), and the pump cover (3) is connected to an oil guide pipe (301).

3. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 2, characterized in that: Both the fuel pump body (1) and the pump cover (3) are provided with threaded holes (2), and bolts (302) are installed in the threaded holes (2). The fuel pump body (1) and the pump cover (3) are connected by bolts (302), and sealing gaskets (4) are fitted at the connection between the fuel pump body (1) and the pump cover (3).

4. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 1, characterized in that: The fuel pump body (1) is provided with an identification plate (102), which is fixedly installed on the outer surface of the fuel pump body (1).

5. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 1, characterized in that: One end of the filter box (5) is fitted into the mounting groove (303), and the end of the filter box (5) facing away from the mounting groove (303) is limited by the limiting block (103).

6. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 1, characterized in that: The extrusion frame (6) extrudes and limits the opening of the filter box (5), and a sealing ring is fitted at the connection between the extrusion frame (6) and the filter box (5).

7. The automotive electronic fuel pump with a quickly cleanable filter screen according to claim 6, characterized in that: A connecting rod (603) is fixedly installed on the extrusion frame (6), and a guide rod (602) is slidably sleeved inside the connecting rod (603). One end of the guide rod (602) away from the connecting rod (603) is fixedly installed in the mounting groove (303).

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