A detachable high-flow shunt pipe fuel pump assembly

Abstract

The utility model relates to fuel pump technical field especially a detachable large flow shunt pipe fuel pump assembly is provided, the connecting pipe inside upper portion is equipped with sealing structure, the connecting pipe inside lower portion is equipped with connecting structure, the bend pipe right side fixed communication has the filter. This detachable large flow shunt pipe fuel pump assembly, through the cooperation of connecting pipe and connecting structure, the operator rotates large flow shunt pipe, makes the external thread screwing on the internal thread of connecting pipe inner wall, can disperse stress to each internal thread and external thread, reduces local stress concentration, leads to the damage of component damage condition, to some extent, can improve the service life of component, through the cooperation of connecting pipe and sealing structure, seals the ring and spring ring respectively on large flow shunt pipe top, spring ring can exert additional elasticity, makes the sealing ring always with the mounting groove abuts tightly, reduces the leakage condition that the sealing property drops due to abrasion.

Description

Technical Field

[0001] This utility model relates to the field of fuel pump technology, specifically to a detachable high-flow-rate splitter fuel pump assembly. Background Technology

[0002] A high-flow-rate splitter fuel pump is a high-performance fuel pump assembly with a detachable splitter structure. It is commonly used in scenarios where there is a need for flexible adaptation of fuel supply flow and pressure, and is often applied in the fuel supply systems of automobiles and other equipment.

[0003] For example, a detachable high-flow-rate splitter fuel pump assembly with announcement number "CN223424140U" allows for the replacement of splitter tubes with different orifice sizes to accommodate pump cores with varying flow rates and pressures, significantly improving production efficiency. However, the elastic arc surface structure of this fuel pump assembly is prone to uneven stress after installation, leading to excessive compression of the annular elastic groove. Prolonged use can damage this groove, reducing the lifespan of the components. Furthermore, the elastic arc surface structure is constantly immersed in fuel and susceptible to wear under pressure fluctuations, resulting in decreased sealing and potential leaks. Utility Model Content

[0004] The purpose of this invention is to solve the problems that after the elastic arc surface structure is installed, uneven force can easily lead to excessive compression of the annular elastic groove, which can easily cause damage after long-term use and reduce the service life of the components. At the same time, the fuel pump assembly, through the elastic arc surface structure, is immersed in fuel for a long time and is prone to wear under pressure fluctuations, resulting in decreased sealing and leakage. Therefore, a detachable high-flow-rate split-pipe fuel pump assembly is proposed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: Design a detachable high-flow-rate splitter fuel pump assembly, including a fuel pump and a filter screen. The filter screen is fixedly connected to the inner wall of the fuel pump inlet. A bend is fixedly connected above the fuel pump, and a connecting pipe is fixedly connected below the bend. A sealing structure is provided at the upper part of the connecting pipe, and a connecting structure is provided at the lower part of the connecting pipe. A filter is fixedly connected to the right side of the bend.

[0006] This setting allows for secondary filtration of the fuel through a configured filter, resulting in purer fuel.

[0007] Preferably, an oil outlet pipe is fixedly connected above the filter.

[0008] This feature allows for easier connection to the engine fuel supply line via the flange above the oil outlet pipe.

[0009] Preferably, the sealing structure includes an elastic ring, the inner walls of the elastic ring and the sealing ring are both sleeved with the high-flow-rate diversion pipe, the outer walls of the elastic ring and the sealing ring are both inserted into the mounting groove, and the two sides of the sealing ring are respectively abutted against the elastic ring and the mounting groove.

[0010] This feature: The elastic ring ensures that the sealing ring is always tightly pressed against the mounting groove, thus providing a good seal.

[0011] Preferably, the mounting groove is machined above the inner wall of the connecting pipe.

[0012] This feature allows the sealing ring and elastic ring to be held in place by the mounting slot, making them easy to replace.

[0013] Preferably, the connection structure includes an internal thread, which is threadedly connected to an external thread, and the internal thread is machined on the lower part of the inner wall of the connecting pipe.

[0014] This setting: By setting internal and external threads, stress can be distributed to each internal and external thread, reducing local stress concentration and preventing damage to components. To a certain extent, this can improve the service life of components.

[0015] Preferably, the external thread is machined above the outer wall of the high-flow-rate splitter pipe.

[0016] This setting allows some fuel to flow back into the fuel tank via a high-flow-rate splitter pipe, thus regulating the flow rate or pressure.

[0017] The present invention proposes a detachable high-flow-rate splitter fuel pump assembly, which has the following advantages: by cooperating with the connecting pipe and the connecting structure, the operator can rotate the high-flow-rate splitter to tighten the external thread onto the internal thread on the inner wall of the connecting pipe. This can distribute stress to each internal and external thread, reduce local stress concentration, and prevent damage to the components. To a certain extent, this can improve the service life of the components.

[0018] By combining the connecting pipe and the sealing structure, the sealing ring and the elastic ring are respectively placed on the top of the high-flow-rate split pipe. The elastic ring can apply additional elastic force to keep the sealing ring tightly against the mounting groove, reducing the possibility of leakage due to wear and reduced sealing performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 A partial front sectional view; Figure 3 for Figure 2 A magnified view of part A in the diagram; Figure 4 for Figure 2 A magnified view of part B in the diagram; Figure 5 A three-dimensional schematic diagram of a high-flow-rate splitter pipe; Figure 6 This is a half-section diagram of the connecting pipe.

[0020] In the diagram: 1. Fuel pump, 2. Bend, 3. Sealing structure, 301. Mounting groove, 302. Sealing ring, 303. Elastic ring, 4. Filter, 5. Fuel outlet pipe, 6. Connecting structure, 601. Internal thread, 602. External thread, 7. High flow rate splitter pipe, 8. Filter screen, 9. Connecting pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings: See attached document Figure 1-6 In this embodiment, a detachable high-flow-rate splitter fuel pump assembly includes a fuel pump 1 and a filter screen 8. The filter screen 8 is fixedly connected to the inner wall of the inlet of the fuel pump 1. A bend 2 is fixedly connected above the fuel pump 1, and a connecting pipe 9 is fixedly connected below the bend 2. A sealing structure 3 is provided at the upper part of the inside of the connecting pipe 9, and a connecting structure 6 is provided at the lower part of the inside of the connecting pipe 9. A filter 4 is fixedly connected to the right side of the bend 2, and an oil outlet pipe 5 is fixedly connected above the filter 4.

[0022] The sealing structure 3 includes an elastic ring 303. The inner walls of both the elastic ring 303 and the sealing ring 302 are fitted into the high-flow-rate split pipe 7. The outer walls of both the elastic ring 303 and the sealing ring 302 are inserted into the mounting groove 301. The two sides of the sealing ring 302 are respectively pressed against the elastic ring 303 and the mounting groove 301. The mounting groove 301 is machined on the upper part of the inner wall of the connecting pipe 9. The sealing ring 302 and the elastic ring 303 are respectively fitted onto the high-flow-rate split pipe 7. The elastic ring 303 can apply additional elastic force to keep the sealing ring 302 pressed against the mounting groove 301, reducing the possibility of leakage due to decreased sealing performance caused by wear.

[0023] The connecting structure 6 includes an internal thread 601, which is threadedly connected to an external thread 602. The internal thread 601 is machined on the lower inner wall of the connecting pipe 9, and the external thread 602 is machined on the upper outer wall of the high-flow-rate split pipe 7. When the operator rotates the high-flow-rate split pipe 7, the external thread 602 is tightened onto the internal thread 601 on the inner wall of the connecting pipe 9. This can distribute the stress to each internal thread 601 and external thread 602, reducing local stress concentration and preventing damage to the components. To a certain extent, this can improve the service life of the components.

[0024] Working principle: When using the detachable high-flow splitter fuel pump assembly: The operator places the sealing ring 302 and the elastic ring 303 on the high-flow-rate split pipe 7 respectively. Then the operator rotates the high-flow-rate split pipe 7 to tighten the external thread 602 onto the internal thread 601 on the inner wall of the connecting pipe 9. This can distribute the stress to each internal thread 601 and external thread 602, reducing local stress concentration and preventing damage to the components. To a certain extent, this can improve the service life of the components. Meanwhile, the elastic ring 303 can apply additional elastic force to ensure that the sealing ring 302 is always pressed against the mounting groove 301, reducing the possibility of leakage due to decreased sealing performance caused by wear; Start the fuel pump 1, and draw the fuel in the reservoir through the filter screen 8 (which can filter large particles of impurities) into the bend pipe 2. After passing through the one-way valve on the right side of the bend pipe 2 (to prevent fuel from flowing back into the bend pipe 2), the fuel enters the filter 4 (the internal filter element can filter fine impurities again), and finally enters the engine's fuel supply line through the fuel outlet pipe 5. When the flow rate or pressure in bend 2 exceeds the pump core's compatibility range, some fuel flows back to the oil reservoir through connecting pipe 9 and high-flow-rate diverter pipe 6, thereby regulating the flow rate or pressure.

[0025] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A detachable high-flow-rate splitter fuel pump assembly, comprising a fuel pump (1) and a filter screen (8), wherein the filter screen (8) is fixedly connected to the inner wall of the inlet of the fuel pump (1), characterized in that: The fuel pump (1) is fixedly connected to a bend (2) above it, and a connecting pipe (9) is fixedly connected to the bottom of the bend (2). A sealing structure (3) is provided inside the upper part of the connecting pipe (9), and a connecting structure (6) is provided inside the lower part of the connecting pipe (9). A filter (4) is fixedly connected to the right side of the bend (2).

2. The detachable high-flow-rate splitter fuel pump assembly according to claim 1, characterized in that: An oil outlet pipe (5) is fixedly connected above the filter (4).

3. The detachable high-flow-rate splitter fuel pump assembly according to claim 1, characterized in that: The sealing structure (3) includes an elastic ring (303), the inner walls of the elastic ring (303) and the sealing ring (302) are both sleeved with the high flow rate diversion pipe (7), the outer walls of the elastic ring (303) and the sealing ring (302) are both inserted into the mounting groove (301), and the two sides of the sealing ring (302) are respectively abutted against the elastic ring (303) and the mounting groove (301).

4. The detachable high-flow-rate splitter fuel pump assembly according to claim 3, characterized in that: The mounting groove (301) is machined on the upper part of the inner wall of the connecting pipe (9).

5. The detachable high-flow-rate splitter fuel pump assembly according to claim 1, characterized in that: The connection structure (6) includes an internal thread (601), which is threadedly connected to an external thread (602). The internal thread (601) is machined below the inner wall of the connecting pipe (9).

6. The detachable high-flow-rate splitter fuel pump assembly according to claim 5, characterized in that: The external thread (602) is machined on the upper part of the outer wall of the high-flow-rate splitter pipe (7).

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