Wear-resistant protective structure of fuel pump sealing assembly

Abstract

The utility model discloses a wear-resistant protection structure of a fuel pump sealing assembly, and relates to the technical field of wear-resistant protection of sealing assemblies. The device comprises a fuel pipe and is mainly characterized in that a pressure adjusting mechanism is arranged at one end of the fuel pipe and comprises an elastic inner wall, a pressure cavity, an elastic element, an air pressure pipe and the like, the tail end of the air pressure pipe is connected with an air pump, the middle section of the air pressure pipe is provided with an observation cylinder and a movable plug for monitoring, the elastic cavity in the elastic element is connected with the air pressure pipe, and streamline blades are arranged on the inner wall of the fuel pipe. The elastic inner wall is coated with a wear-resistant coating and is in direct contact with the elastic element, and a butt joint device at the tail end is in butt joint with the fuel pump; the fuel pump sealing assembly effectively solves the problems that an existing fuel pump sealing assembly is prone to abrasion, lacks a pressure adjusting mechanism and is difficult to monitor abrasion conditions, abrasion resistance is improved, pressure can be automatically adjusted to adapt to pressure fluctuation, abrasion is visually monitored through the observation cylinder, safe and efficient operation of a fuel system is guaranteed, and the service life of the sealing assembly is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of wear-resistant sealing components, in particular to a wear-resistant protective structure of a fuel pump sealing component. Background Art

[0002] In the fuel system, the fuel pump seal plays a vital role. The fuel pump needs to transfer fuel from the fuel tank to the engine and other components. During this process, the seal assembly must ensure that the fuel does not leak, while also withstanding the pressure and impact of the fuel flow.

[0003] However, existing fuel pump seal assemblies present several challenges. Firstly, conventional seals are susceptible to wear after prolonged use due to the constant flow of fuel and pressure fluctuations. Secondly, existing seals often lack an effective pressure regulation mechanism. When pressure in the fuel system fluctuates significantly, the seal may be unable to adapt promptly, further increasing the risk of wear and damage. Furthermore, there is a lack of intuitive monitoring methods for seal wear, making it difficult for users and maintenance personnel to accurately determine the seal's operating status. To address these issues, the inventors have proposed a wear-resistant protective structure for a fuel pump seal assembly. Utility Model Content

[0004] In order to solve the problems of easy wear, lack of pressure regulation and difficulty in monitoring of fuel pump sealing components, the utility model aims to provide a wear-resistant protective structure for fuel pump sealing components.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a wear-resistant protective structure for a fuel pump sealing assembly, comprising a fuel pipe, wherein a pressure regulating mechanism is provided at one end of the fuel pipe proximate to the fuel pump, the pressure regulating mechanism comprising an elastic inner wall disposed on the inner wall of the fuel pipe, the outer wall of the fuel pipe being provided with a plurality of pressure chambers in a circumferential array, the fuel pipe and the pressure chamber being separated by the elastic inner wall on the side of the pressure chamber proximate to the fuel pipe, an elastic element being sleeved within the pressure chamber, and an air pressure tube being fixedly connected to the end of the elastic element remote from the fuel pipe.

[0006] Preferably, an air pump is fixedly installed at one end of the air pressure tube away from the fuel pipe, an observation tube is horizontally installed in the middle section of the air pressure tube, a movable plug is slidably connected to the inside of the observation tube, and the movable plug is relatively brightly colored. The observation tube is made of transparent glass, the movable plug and the observation tube have good airtightness, a fixed amount of gas is sealed between the movable plug and the end of the observation tube, and the diameter of the observation tube is larger than the air pressure tube.

[0007] Preferably, a plurality of streamlined blades are fixedly mounted on the inner wall of the fuel pipe in a circumferential array. The blades are located in the fuel pipe in front of the pressure regulating mechanism, and the deflection directions of the plurality of blades are consistent.

[0008] Compared with the prior art, the beneficial effects of the present invention are:

[0009] 1. The utility model is provided with a wear-resistant coating and an elastic inner wall, which greatly improves the wear resistance of the fuel pump seal assembly, effectively reduces the wear caused by fuel scouring and pressure changes, extends the service life of the seal assembly, reduces the risk of fuel leakage caused by seal assembly wear, and improves the safety and reliability of the fuel system;

[0010] 2. The utility model is equipped with a pressure regulating mechanism that can automatically adjust according to the pressure changes in the fuel system. When the pressure fluctuates, the elastic element and the air pressure tube work together to ensure that the sealing component is always in an appropriate pressure state. This not only reduces wear, but also improves the working efficiency of the fuel pump, stabilizes fuel delivery, and makes the engine and other equipment run more smoothly.

[0011] 3. The utility model is provided with an observation tube and a movable plug, which provides an intuitive monitoring method for the wear of the sealing component. Users and maintenance personnel can timely understand the working status of the sealing component by observing the position changes of the movable plug, which is convenient for timely maintenance and replacement when problems occur, reducing downtime and maintenance costs caused by sealing component failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic structural diagram of the utility model.

[0014] Figure 2 It is a side structural diagram of the utility model.

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure in the middle.

[0017] In the figure: 1. fuel pipe; 12. elastic inner wall; 13. pressure chamber; 14. elastic element; 141. elastic chamber; 11. blade; 2. pressure regulating mechanism; 21. air pressure tube; 22. observation tube; 221. movable plug; 23. air pump; 3. docking device; 31. docking plate; 32. docking hook. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example: Figure 1-3 As shown, the utility model provides a wear-resistant protective structure for a fuel pump sealing assembly, including a fuel pipe 1. A pressure regulating mechanism 2 is provided at one end of the fuel pipe 1 near the fuel pump. The pressure regulating mechanism 2 includes an elastic inner wall 12, which is provided on the inner wall of the fuel pipe 1. The outer wall of the fuel pipe 1 is provided with a plurality of pressure chambers 13 in a circumferential array. The elastic inner wall 12 separates the fuel pipe 1 from the pressure chamber 13 on the side of the pressure chamber 13 near the fuel pipe 1. An elastic element 14 is sleeved in the pressure chamber 13. An air pressure pipe 21 is fixedly connected to the end of the elastic element 14 away from the fuel pipe 1.

[0020] By adopting the above technical solution, in the wear-resistant protection structure of the fuel pump sealing assembly, the fuel pipe 1 serves as the core component and basic support, providing an installation location for other parts. The elastic inner wall 12 is located on the inner wall of the fuel pipe 1, enhancing wear resistance and transmitting pressure changes. The pressure chamber 13 provides an installation space for the elastic element 14, which adjusts the pressure of the fuel pipe 1 to adapt to pressure changes. The elastic element 14 is connected to the air pressure pipe 21, which stabilizes the pressure in the pipe according to pressure deformation. The air pressure pipe 21 connects the elastic element 14 and the air pump 23, transmitting air pressure signals to achieve pressure regulation. The various parts work together to improve the wear resistance of the sealing assembly, adapt to pressure changes, and ensure safe and efficient operation of the fuel system.

[0021] In the wear-resistant protection structure of the fuel pump sealing assembly, an air pump 23 is fixedly installed at the end of the air pressure tube 21 away from the fuel pipe 1, and an observation tube 22 is horizontally installed in the middle section of the air pressure tube 21. A movable plug 221 is slidably connected inside the observation tube 22, and the color of the movable plug 221 is relatively bright. The material of the observation tube 22 is transparent glass. The movable plug 221 and the observation tube 22 have good airtightness. A fixed amount of gas is sealed between the movable plug 221 and the end of the observation tube 22. The diameter of the observation tube 22 is larger than that of the air pressure tube 21.

[0022] By adopting the above technical solution, in the wear-resistant protection structure of the fuel pump sealing assembly, the air pump 23 is fixedly installed at one end of the air pressure tube 21 away from the fuel pipe 1, providing air pressure power for the entire structure, thereby realizing pressure regulation and control of the elastic element 14. The observation tube 22 is horizontally installed in the middle section of the air pressure tube 21. Its transparent glass material allows the internal situation to be clearly visible. The brightly colored movable plug 221 slidingly connected in the observation tube 22 has good airtightness with the observation tube 22, and a fixed amount of gas is sealed at the end. When the pressure changes, the position of the movable plug 221 will change. By observing its position change, the working status of the sealing assembly can be intuitively monitored. The diameter of the observation tube 22 is larger than that of the air pressure tube 21, which facilitates clearer observation of the movement of the movable plug 221. The various parts work together to ensure safe and efficient operation of the fuel system, while facilitating monitoring and maintenance of the sealing assembly.

[0023] The elastic cavity 141 inside the elastic element 14 is connected to the air pressure tube 21 , and the air pressure tube 21 connects the air pump 23 and the elastic cavity 141 .

[0024] By adopting the above technical solution, the elastic cavity 141 inside the elastic element 14 serves to connect with the air pressure tube 21, so that the air pressure signal can be transmitted inside the elastic element 14. The air pressure tube 21 connects the air pump 23 and the elastic cavity 141, and is responsible for transmitting the air pressure signal, so as to realize the pressure regulation control of the elastic element 14 by the air pump 23, thereby ensuring that the entire sealing assembly can be adaptively adjusted according to different working pressures, thereby improving the stability and reliability of the sealing assembly.

[0025] A plurality of streamlined blades 11 are fixedly mounted on the inner wall of the fuel pipe 1 in a circumferential array. The blades 11 are located in the fuel pipe 1 in front of the pressure regulating mechanism 2 , and the deflection directions of the plurality of blades 11 are consistent.

[0026] By adopting the above technical solution, the wear-resistant protective structure of the fuel pump seal assembly includes a plurality of streamlined blades 11 fixedly mounted in a circumferential array on the inner wall of the fuel pipe 1, located in front of the pressure regulating mechanism 2. These blades 11 can, on the one hand, guide the flow of fuel within the fuel pipe 1, making it flow more smoothly and reducing the impact of turbulent flow on the seal assembly. On the other hand, because the deflection direction of the blades 11 is consistent, they can have a certain rectifying effect on the flow of fuel, reducing the pressure fluctuations caused by the fuel flow, thereby reducing wear on the seal assembly and improving the service life and stability of the seal assembly.

[0027] The elastic inner wall 12 is coated with a wear-resistant coating, and the elastic inner wall 12 is in direct contact with the elastic element 14 .

[0028] By adopting the above technical solution, the elastic inner wall 12 is coated with a wear-resistant coating to improve wear resistance, and is in direct contact with the elastic element 14 to transmit pressure changes, cooperate to achieve pressure regulation, and ensure sealing performance.

[0029] A docking device 3 is provided at the end of the fuel pipe 1. The docking device 3 includes a docking plate 31 and a docking hook 32. The docking plate 31 and the docking hook 32 are staggered at 90 degrees and are respectively connected to the docking plate 31 and the docking hook 32 on the docking part of the fuel pump.

[0030] By adopting the above technical solution, in the wear-resistant protection structure of the fuel pump sealing assembly, the docking connector 3 at the end of the fuel pipe 1 plays an important role in connecting the fuel pipe 1 to the fuel pump. The docking plate 31 and the docking hook 32 are designed to be staggered at 90 degrees, which can closely match and connect with the corresponding parts of the fuel pump, ensuring a firm and reliable connection and facilitating installation, disassembly and maintenance.

[0031] Working Principle: During use, fuel first flows into the fuel pipe 1. A number of streamlined vanes 11 are fixedly mounted in a circular array on the inner wall of the fuel pipe 1. These vanes 11, with their uniform deflection directions, guide the fuel flow, making it smoother and reducing the impact of turbulent flow on the sealing assembly. Furthermore, these vanes 11 provide a certain degree of flow control for the fuel, reducing pressure fluctuations caused by the fuel flow. When the fuel pressure changes, the elastic inner wall 12, acting as a key transmission component, promptly transmits the pressure change to the elastic element 14 within the pressure chamber 13. The elastic element 14 deforms accordingly based on the pressure. The elastic chamber 141 within the elastic chamber is connected to the air pressure pipe 21, which transmits the pressure signal to the air pump 23 or receives the air pressure signal provided by the air pump 23. The air pump 23 adjusts the air pressure based on the pressure signal, thereby regulating the pressure of the elastic element 14 and, consequently, the pressure within the fuel pipe 1, ensuring that the sealing assembly maintains a good sealing performance under varying operating pressures. During this process, the observation tube 22 installed horizontally in the middle section of the air pressure tube 21 plays an important monitoring role. A brightly colored movable plug 221 is slidably connected to the inside of the observation tube 22, and the movable plug 221 and the observation tube 22 have good airtightness. A fixed amount of gas is sealed at the end. When the pressure changes, the movable plug 221 will move with the change in pressure. Since the observation tube 22 is made of transparent glass, users and maintenance personnel can intuitively understand the working status of the sealing component by observing the position change of the movable plug 221, which is convenient for timely maintenance and replacement when problems arise. Finally, the docking device 3 set at the end of the fuel pipe 1 includes a docking plate 31 and a docking hook 32. The docking plate 31 and the docking hook 32 are designed to be staggered at 90 degrees, and can be tightly connected with the docking plate and docking hook on the docking point of the fuel pump. This design ensures a firm and reliable connection, facilitates installation and disassembly maintenance, and enables the entire fuel system to operate stably.

[0032] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A wear-resistant protective structure for a fuel pump sealing assembly, comprising a fuel pipe (1), characterized in that: A pressure regulating mechanism (2) is provided at one end of the fuel pipe (1) close to the fuel pump. The pressure regulating mechanism (2) comprises an elastic inner wall (12). The elastic inner wall (12) is provided on the inner wall of the fuel pipe (1). The outer wall of the fuel pipe (1) is provided with a plurality of pressure chambers (13) in a circumferential array. The fuel pipe (1) and the pressure chamber (13) are separated by the elastic inner wall (12) on the side of the pressure chamber (13) close to the fuel pipe (1). An elastic element (14) is sleeved in the pressure chamber (13). An end of the elastic element (14) away from the fuel pipe (1) is fixedly connected to an air pressure pipe (21).

2. A fuel pump seal assembly wear-resistant protective structure according to claim 1, characterized in that: An air pump (23) is fixedly installed at one end of the air pressure tube (21) away from the fuel pipe (1); an observation tube (22) is transversely installed in the middle section of the air pressure tube (21); a movable plug (221) is slidably connected in the observation tube (22); the movable plug (221) is brightly colored; the observation tube (22) is made of transparent glass; the movable plug (221) and the observation tube (22) have good airtightness; a fixed amount of gas is sealed between the movable plug (221) and the ends of the observation tube (22); and the diameter of the observation tube (22) is larger than that of the air pressure tube (21).

3. The wear-resistant protective structure of a fuel pump seal assembly according to claim 1, characterized in that: The elastic cavity (141) inside the elastic element (14) is connected to the air pressure tube (21), and the air pressure tube (21) is connected to the air pump (23) and the elastic cavity (141).

4. The wear-resistant protective structure of a fuel pump seal assembly according to claim 1, characterized in that: The inner wall of the fuel pipe (1) is fixedly mounted with a plurality of streamlined blades (11) in a circumferential array. The blades (11) are located in the fuel pipe (1) in front of the pressure regulating mechanism (2), and the deflection directions of the plurality of blades (11) are consistent.

5. The wear-resistant protective structure of a fuel pump seal assembly according to claim 1, characterized in that: The elastic inner wall (12) is coated with a wear-resistant coating, and the elastic inner wall (12) is in direct contact with the elastic element (14).

6. The wear-resistant protective structure of a fuel pump seal assembly according to claim 1, characterized in that: A docking device (3) is provided at the end of the fuel pipe (1), and the docking device (3) comprises a docking plate (31) and a docking hook (32). The docking plate (31) and the docking hook (32) are staggered at 90 degrees and are respectively connected to the docking plate and the docking hook at the docking point of the fuel pump.

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