Fuel pump with good sealing performance

Abstract

The utility model relates to the technical field of automobile parts, and discloses a fuel pump with good sealing performance, which comprises a sealing shell assembly, a part assembly is mounted in the sealing shell assembly, a mounting assembly is mounted in the middle of the sealing shell assembly, and a connecting assembly is mounted at the bottom of the part assembly. According to the utility model, the connection mode in the device is changed and optimized into the connection assembly, so that when the device is used, the connection mode of convenient assembly and disassembly can be realized through the assembly, and certain convenience can be provided when the interior of the device is overhauled.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a fuel pump with good sealing performance. Background Art

[0002] Fuel pump is a professional term in the auto parts industry. It is one of the basic components of the fuel injection system of electronic fuel injection vehicles. It is located inside the vehicle's fuel tank. The fuel pump works when starting and the engine is running. If the engine stops and the ignition switch is still on, the HFM-SFI control module turns off the power supply of the fuel pump to avoid accidental ignition. The function of the fuel pump is to suck the fuel from the fuel tank, pressurize it and deliver it to the fuel supply pipe. It cooperates with the fuel pressure regulator to establish a certain fuel pressure. The fuel pump delivers high-pressure fuel to the oil distribution pipe to ensure continuous fuel supply to the injector. The fuel pump consists of an electric motor, a pressure limiter, and a check valve. The electric motor actually works in the fuel in the oil pump housing. Don't worry, because there is nothing in the housing that can ignite. The fuel can lubricate and cool the fuel motor. A check valve is installed at the oil outlet. The pressure limiter is located on the pressure side of the oil pump housing with a channel leading to the oil inlet. The ZYB ignition booster fuel pump is suitable for conveying diesel, heavy oil, residual oil, fuel oil and other media. It is especially suitable for the fuel pump of the burner in the mixing station of road and bridge engineering. It is an ideal product to replace imported products. ZYB type booster fuel pump is not suitable for conveying highly volatile or low flash point liquids, such as ammonia, benzene, etc.

[0003] The application number is CN201520743045.8, which discloses a fuel pump with a simple structure and good sealing performance, including a shell, the shell including a shell body and a cover body, an oil passage is arranged in the shell, and also includes a protective shell, the protective shell is arranged on the outer peripheral surfaces of the shell body and the cover body, there is a gap between the respective end surfaces of the shell body and the cover body, a coil frame is arranged in the protective shell, the bottom surface of one end of the coil frame abuts the outer peripheral surface of the shell body, and a cavity is formed between the bottom surface of the other end and the outer peripheral surface of the copper tube arranged on the oil passage, a first sealing ring is arranged in the cavity, the outer wall of the copper tube abuts the inner wall of the shell body, the first sealing ring forms a sealing fit with the shell body, the cover body, the copper tube, and the coil frame respectively, a one-way flow component is arranged at the inlet end of the oil passage, and a piston component is arranged at the outlet end of the oil passage.

[0004] Although the above-mentioned utility model has a first sealing ring in the cavity, the outer wall of the copper tube abuts against the inner wall of the shell body, and the first sealing ring forms a sealing fit with the shell body, the cover body, the copper tube, and the coil frame respectively, and the inlet end of the oil passage is provided with a one-way flow component, and the outlet end of the oil passage is provided with a piston component, but there is a disadvantage that the device does not provide a relatively convenient disassembly connection device when in use. Therefore, it takes a certain amount of time and effort to carry out subsequent maintenance of the internal parts, and it is easy to cause damage to the objects due to violent disassembly.

[0005] Therefore, it is necessary to optimize the connection method in the device by changing it into a connection component, so that when using the device, it can be easily installed and disassembled through its components, which can provide certain convenience when performing internal maintenance on the device. Utility Model Content

[0006] The utility model aims to provide a fuel pump with good sealing performance to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0008] The utility model discloses a fuel pump with good sealing performance, comprising a sealing shell component, a parts component is installed inside the sealing shell component, a mounting component is installed in the middle of the sealing shell component, and a connecting component is installed at the bottom of the parts component.

[0009] Furthermore, the sealing shell assembly comprises a sealing shell, a connection port is installed on one side of the sealing shell, and an expansion and contraction port is installed in the middle of the connection port.

[0010] Furthermore, the parts assembly includes a flow port, a mounting shell is installed at the bottom of the flow port, a limiting block is installed around the bottom of the mounting shell, and a toughness spring is installed at the bottom.

[0011] Furthermore, an extrusion block is installed at the bottom of the tough spring, a filtering device is installed at the bottom of the extrusion block, and a mounting base is installed at the bottom of the filtering device.

[0012] Furthermore, the installation assembly includes a connecting piece, a silicone lubricating pad is installed in the middle of the connecting piece, and a plurality of oil outlet holes are opened on the inner wall of the silicone lubricating pad.

[0013] Furthermore, the connecting component includes a slide groove, a limiting groove is opened at the end of the slide groove, a limiting cavity is opened at the front top of the limiting groove, a return spring is installed inside the limiting cavity, and a limiting column is installed at the bottom of the return spring.

[0014] The utility model has the following beneficial effects:

[0015] (1) The utility model is a fuel pump with good sealing performance. By changing and optimizing the connection mode in the device into a connection component, when the device is used, the connection mode of the device can be conveniently installed and disassembled through its components, which can provide certain convenience when performing internal maintenance on the device.

[0016] (2) The utility model is a fuel pump with good sealing performance. A connecting component is installed in the middle of the device. Lubricating parts are installed inside the device so that when the device is used, the components can be lubricated. This can avoid noise caused by rust when the device is used.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of a fuel pump with good sealing performance according to the utility model;

[0020] Figure 2 This is a schematic diagram of the expanded structure of a fuel pump with good sealing performance according to the utility model;

[0021] Figure 3 This is a schematic diagram of the structure of a connecting assembly of a fuel pump with good sealing performance according to the utility model;

[0022] Figure 4 This is a schematic diagram of the structure of an installation assembly of a fuel pump with good sealing performance according to the utility model;

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] In the figure: 1. Sealing shell assembly; 2. Parts assembly; 3. Mounting assembly; 4. Connecting assembly; 101. Sealing shell; 102. Connecting port; 103. Tension port; 201. Flow port; 202. Mounting shell; 203. Limiting block; 204. Tough spring; 205. Extrusion block; 206. Filter device; 207. Mounting base; 301. Connecting piece; 302. Silicone lubrication pad; 303. Oil outlet; 401. Slide; 402. Limiting slot; 403. Limiting cavity; 404. Reset spring; 405. Limiting column. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figure 1 - Figure 4 As shown, the utility model is a fuel pump with good sealing performance, comprising a sealing shell assembly 1, a part assembly 2 is installed inside the sealing shell assembly 1, a mounting assembly 3 is installed in the middle, and a connecting assembly 4 is installed at the bottom of the part assembly 2.

[0027] The connection component 4 provided can make it possible to conveniently install and disassemble the device through its components when using the device, thus providing certain convenience when performing internal maintenance on the device.

[0028] The sealing shell assembly 1 includes a sealing shell 101, a connecting port 102 is installed on one side of the sealing shell 101, and an expansion joint 103 is installed in the middle of the connecting port 102. When connecting, a certain sealing performance can be achieved by passing the corresponding interface through the expansion joint 103, thereby further ensuring the sealing effect.

[0029] The component assembly 2 includes a flow port 201 , a mounting shell 202 is installed at the bottom of the flow port 201 , a limit block 203 is installed around the bottom of the mounting shell 202 , and a toughness spring 204 is installed at the bottom.

[0030] An extrusion block 205 is installed at the bottom of the tough spring 204, a filter device 206 is installed at the bottom of the extrusion block 205, and a mounting base 207 is installed at the bottom of the filter device 206. When the device is working, the internally arranged filter device can provide a certain oil filtering effect to prevent mixed oil from entering the engine and causing damage to it.

[0031] The installation component 3 includes a connecting piece 301, a silicone lubricating pad 302 is installed in the middle of the connecting piece 301, and a plurality of oil outlet holes 303 are opened on the inner wall of the silicone lubricating pad 302. When installing, when the corresponding fixing bolts are fixed, when they pass through the silicone lubricating pad 302, the internal lubricating oil can be discharged through the oil outlet holes 303 through the squeezing force to lubricate, thereby avoiding the generation of rust and noise.

[0032] The connecting component 4 includes a slide groove 401, a limiting groove 402 is provided at the end of the slide groove 401, a limiting cavity 403 is provided on the front top of the limiting groove 402, a return spring 404 is installed inside the limiting cavity 403, and a limiting column 405 is installed at the bottom of the return spring 404. When connection is required, the limiting column 405 is pressed downward and the corresponding limiting block 203 is slid into the limiting groove 402, and then the limiting column 405 can be squeezed downward by the internal return spring 404 to complete the limiting work and fix it.

[0033] When using this device, first of all, when connecting, the corresponding interface can be passed through the expansion and contraction port 103 to achieve a certain sealing effect, so that the sealing effect can be further guaranteed. When installing, when the corresponding fixing bolt is fixed, when it passes through the silicone lubrication pad 302, the internal lubricating oil can be discharged through the oil outlet 303 through the squeezing force to lubricate, thereby avoiding the generation of rust noise. When it is necessary to connect, press the limit column 405 downward and then slide the corresponding limit block 203 into the limit groove 402. Then let go and the limit column 405 can be squeezed downward by the internal return spring 404 to achieve the limit work and fix it. When the device is working, the internal filtering device can provide a certain oil filtering effect to avoid mixed oil entering the engine and causing damage to it.

[0034] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A fuel pump with good sealing performance, comprising a sealing housing assembly (1), characterized in that: A component assembly (2) is installed inside the sealing shell assembly (1), and a mounting assembly (3) is installed in the middle thereof; a connecting assembly (4) is installed at the bottom of the component assembly (2).

2. A fuel pump with good sealing performance according to claim 1, characterized in that: The sealing shell assembly (1) comprises a sealing shell (101), a connection port (102) being installed on one side of the sealing shell (101), and a tensionable expansion port (103) being installed in the middle of the connection port (102).

3. A fuel pump with good sealing performance according to claim 1, characterized in that: The component assembly (2) comprises a flow port (201), a mounting shell (202) is installed at the bottom of the flow port (201), a limit block (203) is installed around the bottom of the mounting shell (202), and a toughness spring (204) is installed at the bottom.

4. A fuel pump with good sealing performance according to claim 3, characterized in that: An extrusion block (205) is installed at the bottom of the tough spring (204), a filtering device (206) is installed at the bottom of the extrusion block (205), and a mounting base (207) is installed at the bottom of the filtering device (206).

5. A fuel pump with good sealing performance according to claim 1, characterized in that: The installation assembly (3) comprises a connecting piece (301), a silicone lubricating pad (302) is installed in the middle of the connecting piece (301), and a plurality of oil outlet holes (303) are provided on the inner wall of the silicone lubricating pad (302).

6. A fuel pump with good sealing performance according to claim 1, characterized in that: The connecting assembly (4) comprises a slide groove (401), a limiting groove (402) is provided at the end of the slide groove (401), a limiting cavity (403) is provided at the front top of the limiting groove (402), a return spring (404) is installed inside the limit cavity (403), and a limit column (405) is installed at the bottom of the return spring (404).

Images