Fuel pump assembly with multifunctional diffraction pump structure

Abstract

The utility model discloses a fuel pump assembly with a multifunctional diffraction pump structure, relates to the field of fuel pumps, solves the problem that impurities are conveyed back to an oil tank again during oil return of an existing device and follow-up cleaning operation is tedious, and adopts the following scheme that the fuel pump assembly comprises a fuel pump assembly and a fine filtration assembly arranged in the fuel pump assembly, the output end of the fuel pump assembly is fixedly connected with an oil outlet pipe, and an oil inlet hole is formed in the bottom of the fuel pump assembly. A filter belt located on the bottom side of the oil inlet hole is fixedly installed at the bottom of the fuel pump assembly, and a blocking frame located on the bottom side of the filter belt is fixedly installed at the bottom of the fuel pump assembly. According to the fuel pump assembly with the multifunctional diffraction pump structure, through the arrangement of the blocking frame and the filter belt on the bottom side of the fuel pump assembly, oil can penetrate through the blocking frame and the penetrating groove in the filter belt to be input into the fine filtration assembly through the oil inlet hole when input, fine filtration is conducted on the oil through the fine filtration assembly, and when oil returns, the filter belt is tightly attached to the blocking frame, so that the oil return efficiency is improved. Impurities in the filter strip can be intercepted and adhered to the filter strip.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pumps, in particular to a fuel pump assembly with a multifunctional diffraction pump structure. Background Art

[0002] The automotive fuel pump is one of the basic components of the fuel injection system of an electronic fuel injection vehicle. Its function is to suck the fuel from the fuel tank, pressurize it and deliver it to the fuel supply pipe, and cooperate with the fuel pressure regulator to establish a certain fuel pressure.

[0003] After searching, the application with patent number 201620474696.6 discloses a fuel pump assembly, which includes an upper cover, an oil outlet pipe, a filter, an oil pump, a pressure regulating valve, a bottom shell, a float assembly and an oil inlet pipe. The upper cover is connected to the bottom shell through a support rod, a filter is arranged in the bottom shell, and the lower end of the filter is an integrally arranged oil pump. The oil inlet pipe is arranged on one side of the bottom of the bottom shell, and the oil inlet pipe is connected to one end of the dual injection mechanism, and the other end of the dual injection mechanism is connected to the upper end of the filter through a pipeline;

[0004] The above application document prevents impurities from entering the fuel tank and affecting the oil quality by setting a sealing component between the fuel pump and the fuel tank. Generally, a special fine filter component is provided in the fuel pump to filter the oil transmitted therein to ensure that the oil input into the engine is clean, and the filtered impurities are output back to the fuel tank with the reflux of the oil. As the use time increases, more impurities will appear in the fuel tank, affecting the quality of the oil and making it difficult to clean up later.

[0005] Therefore, we propose a fuel pump assembly with a multifunctional diffraction pump structure. Utility Model Content

[0006] In view of the deficiencies of the prior art, the utility model provides a fuel pump assembly with a multifunctional diffraction pump structure, which solves the problem of the prior art device that impurities are re-transferred back into the fuel tank during oil return and subsequent cleaning operations are cumbersome.

[0007] To achieve the above objectives, the utility model is implemented through the following technical solutions: a fuel pump assembly with a multifunctional diffraction pump structure, including a fuel pump assembly and a flange cover on the top side thereof;

[0008] The fuel pump assembly is provided with a fine filter component, the output end of the fuel pump assembly is fixedly connected with an oil outlet pipe, and the bottom of the fuel pump assembly is provided with an oil inlet hole;

[0009] A filter belt located at the bottom side of the oil inlet hole is fixedly installed at the bottom of the fuel pump assembly, and a retaining frame located at the bottom side of the filter belt is fixedly installed at the bottom of the fuel pump assembly;

[0010] The filter belt is a bucket-shaped belt, the filter belt is a filter belt, and a through groove is arranged on the bottom side of the filter belt;

[0011] The retaining frame is a table-shaped bucket, and the outer wall of the retaining frame is provided with oil grooves distributed in a ring shape.

[0012] Preferably, the cross section of the oil tank increases gradually from the inside to the outside, and the baffle is made of fine steel;

[0013] The oil groove on the retaining frame is provided to facilitate the drawing in of oil and also to facilitate the return and output of oil.

[0014] Preferably, the bottom side of the fuel pump assembly is provided with an oil inlet surface located outside the oil inlet hole, and the curvature of the oil inlet surface is the same as that of the filter belt;

[0015] The setting of the oil inlet surface enables the filter belt to be closely attached thereto when the oil is pumped in, thereby preventing impurities from adhering to the bottom surface.

[0016] Preferably, the oil inlet hole is the input end of the fine filter assembly, and the oil outlet pipe is fixedly connected to the output end of the fine filter assembly;

[0017] The fine filter assembly is provided to finely filter the oil drawn into the oil inlet, and output the oil through the oil outlet pipe to the engine for oil supply.

[0018] Preferably, the fine filter assembly is composed of a filter cavity and a filter element inside thereof, and the main body of the filter element is a cylindrical filter element;

[0019] The arrangement of the fine filter assembly facilitates efficient fine filtering of the oil therein.

[0020] Preferably, a liquid level sensor floating on the oil body liquid surface is fixedly mounted on the outer wall of the fuel pump assembly;

[0021] Among them, the setting of the liquid level sensor can monitor the height of the oil level in the oil tank in real time, thereby monitoring the overall oil volume.

[0022] Preferably, an oil frame is fixedly mounted at the bottom of the fuel pump assembly, the oil frame being in close contact with the bottom surface of the fuel tank and being located outside the retaining frame and the filter belt.

[0023] The utility model provides a fuel pump assembly with a multifunctional diffraction pump structure. It has the following beneficial effects:

[0024] The fuel pump assembly with a multifunctional diffraction pump structure can, through the arrangement of the baffle frame and the filter belt on the bottom side of the fuel pump assembly, enable the oil to pass through the baffle frame and the grooves on the filter belt and be input into the fine filter component through the oil inlet hole when the oil is input, and the fine filter component will perform fine filtering on the oil; and when the oil is returned, the filter belt is tightly attached to the baffle frame, and impurities therein will be intercepted and adhered to the filter belt, thereby preventing the impurities from returning to the fuel tank and making it difficult to clean up later. This solves the problem of the existing device that when the oil is returned, the impurities are returned to the fuel tank and the subsequent cleaning operation is cumbersome. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the utility model;

[0026] Figure 2 It is a schematic diagram of the structure of the bottom side of the utility model;

[0027] Figure 3 This is a schematic diagram of the structure of the oil inlet hole of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the filter belt and retaining frame of the utility model.

[0029] In the figure: 1. fuel pump assembly; 2. flange cover; 3. fine filter assembly; 4. oil outlet pipe; 5. liquid level sensor; 6. oil frame; 7. retaining frame; 71. oil tank; 8. filter belt; 81. through groove; 9. oil inlet hole; 10. oil inlet surface. DETAILED DESCRIPTION

[0030] 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.

[0031] See also Figure 1-4 The embodiment of the utility model provides a technical solution: a fuel pump assembly with a multifunctional diffraction pump structure, comprising a fuel pump assembly 1 and a flange cover 2 on the top side thereof; a fine filter assembly 3 is provided in the fuel pump assembly 1, an oil outlet pipe 4 is fixedly connected to the output end of the fuel pump assembly 1, and an oil inlet hole 9 is provided at the bottom of the fuel pump assembly 1; a filter belt 8 located at the bottom side of the oil inlet hole 9 is fixedly installed at the bottom of the fuel pump assembly 1, and a retaining frame 7 located at the bottom side of the filter belt 8 is fixedly installed at the bottom of the fuel pump assembly 1; the filter belt 8 is a bucket-shaped belt, the filter belt 8 is a filter mesh belt, and a through groove 81 is provided on the bottom side of the filter belt 8; the retaining frame 7 is a table-shaped bucket, and an oil groove 71 distributed in an annular shape is opened on the outer wall of the retaining frame 7;

[0032] Among them, the fuel pump assembly with a multifunctional diffraction pump structure, through the arrangement of the baffle frame 7 and the filter belt 8 on the bottom side of the fuel pump assembly 1, can, when the oil is input, pass through the baffle frame 7 and the through groove 81 on the filter belt 8 and be input into the fine filter component 3 through the oil inlet hole 9, and the oil is finely filtered by the filter belt 8. When the oil is returned, the filter belt 8 is tightly attached to the baffle frame 7, and the impurities therein will be intercepted and adhered to the filter belt 8, so as to avoid the impurities returning to the fuel tank and making it difficult to clean up later. This solves the problem of the existing device that when the oil is returned, the impurities are returned to the fuel tank and the subsequent cleaning operation is cumbersome.

[0033] Embodiment 2: The cross section of the oil groove 71 increases gradually from the inside to the outside, and the retaining frame 7 is made of fine steel; wherein, the setting of the oil groove 71 on the retaining frame 7 facilitates the pumping in of the oil body, and also facilitates the return and output of the oil body.

[0034] The bottom side of the fuel pump assembly 1 is provided with an oil inlet surface 10 located outside the oil inlet hole 9, and the curvature of the oil inlet surface 10 is the same as that of the filter belt 8; wherein, the setting of the oil inlet surface 10 enables the filter belt 8 to be closely attached thereto when the oil is pumped in, thereby preventing impurities from adhering to its bottom surface.

[0035] The oil inlet 9 is the input end of the fine filter component 3, and the oil outlet pipe 4 is fixedly connected to the output end of the fine filter component 3; wherein, the setting of the fine filter component 3 can finely filter the oil drawn into the oil inlet 9, and output it through the oil outlet pipe 4 to the engine for oil supply.

[0036] The fine filter assembly 3 is composed of a filter cavity and a filter element inside thereof, and the main body of the filter element is a cylindrical filter element; wherein, the arrangement of the fine filter assembly 3 facilitates efficient fine filtering of the oil body therein.

[0037] A liquid level sensor 5 floating on the oil body surface is fixedly mounted on the outer wall of the fuel pump assembly 1; wherein, the setting of the liquid level sensor 5 can monitor the height of the oil body surface in the fuel tank in real time, thereby monitoring the overall oil volume.

[0038] An oil frame 6 is fixedly mounted at the bottom of the fuel pump assembly 1 , and is closely attached to the bottom surface of the fuel tank and is located outside the retaining frame 7 and the filter belt 8 .

[0039] The working principle and use process of the utility model are as follows: when the device is needed to work, it is installed in the fuel tank. When the fuel pump assembly 1 extracts oil, the oil is transmitted upward at this time, and the filter belt 8 is upwardly pressed against the bottom surface of the oil inlet surface 10. The oil passes through the oil groove 71 on the retaining frame 7 and the through groove 81 on the filter belt 8 to the oil inlet hole 9, and is extracted into the fine filter component 3 for corresponding fine filtering. After the fine filtering is completed, the oil outlet pipe 4 performs subsequent oil supply. When the oil is returned, the oil is transmitted from top to bottom at this time, the bottom surface of the filter belt 8 is pressed against the retaining frame 7, and the through groove 81 is in a blocked state. The return oil passes through the filter belt 8 and is re-output from the oil groove 71 to the fuel tank. Impurities adhere to the top surface of the through groove 81, thereby achieving the effect of intercepting impurities. Finally, the through groove 81 can be cleaned regularly.

[0040] 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.

[0041] 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 fuel pump assembly with a multifunctional diffraction pump structure, comprising a fuel pump assembly (1) and a flange cover (2) on the top side thereof; Features: The fuel pump assembly (1) is provided with a fine filter assembly (3), the output end of the fuel pump assembly (1) is fixedly connected to an oil outlet pipe (4), and the bottom of the fuel pump assembly (1) is provided with an oil inlet hole (9); A filter belt (8) located at the bottom side of the oil inlet hole (9) is fixedly mounted on the bottom of the fuel pump assembly (1), and a retaining frame (7) located at the bottom side of the filter belt (8) is fixedly mounted on the bottom of the fuel pump assembly (1); The filter belt (8) is a bucket-shaped belt, the filter belt (8) is a filter mesh belt, and a through groove (81) is provided on the bottom side of the filter belt (8); The retaining frame (7) is a table-shaped bucket, and an outer wall of the retaining frame (7) is provided with oil grooves (71) distributed in an annular shape.

2. A fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: The cross-section of the oil groove (71) gradually increases from the inside to the outside, and the retaining frame (7) is made of fine steel.

3. The fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: The bottom side of the fuel pump assembly (1) is provided with an oil inlet surface (10) located outside the oil inlet hole (9), and the curvature of the oil inlet surface (10) is the same as that of the filter belt (8).

4. The fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: The oil inlet hole (9) is the input end of the fine filter component (3), and the oil outlet pipe (4) is fixedly connected to the output end of the fine filter component (3).

5. The fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: The fine filter assembly (3) consists of a filter cavity and a filter element inside thereof, and the main body of the filter element is a cylindrical filter element.

6. The fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: A liquid level sensor (5) floating on the liquid surface of the oil body is fixedly mounted on the outer wall of the fuel pump assembly (1).

7. The fuel pump assembly with a multifunctional diffraction pump structure according to claim 1, characterized in that: The bottom of the fuel pump assembly (1) is fixedly mounted with an oil frame (6) which is in close contact with the bottom surface of the fuel tank and is located outside the retaining frame (7) and the filter belt (8).

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