Fuel pump assembly

Abstract

The utility model provides a fuel pump assembly, and belongs to the technical field of fuel pumps. The problems that an existing fuel pump is not filtered for a long time, the fuel pump is prone to being blocked, and normal use of the electric fuel pump is affected are solved. The fuel oil pump assembly comprises an oil pump assembly, a plunger and a reset spring are arranged in the oil pump assembly, an oil inlet end is arranged at the bottom end of the oil pump assembly, a filtering piece is arranged on the oil pump assembly, a sliding piece is arranged on the oil pump assembly, and a plurality of balls are arranged between the filtering piece and the sliding piece. Rolling grooves allowing the balls to roll are formed in the oil pump assembly, first clamping grooves matched with the balls are formed in the outer wall of the filtering piece, second clamping grooves matched with the balls are formed in the inner wall of the sliding piece, the filtering piece is composed of a filtering ring and a filtering net, and a fixing part is arranged on the inner wall of the oil pump assembly. The upper end of the filter ring abuts against the lower end of the fixing part. The utility model has the advantages that the filter structure is arranged, and the service life is prolonged.

Description

Technical Field

[0001] This utility model belongs to the field of fuel pump technology, and specifically relates to a fuel pump assembly. Background Technology

[0002] Fuel pump: Fuel pumps are characterized by simple structure, compact size, good suction, large fuel delivery volume, low noise, stable operation, high efficiency, and long service life. They are suitable for the lubrication or cooling systems of various machine tools, internal combustion engines, diesel engines, ships, and other mechanical equipment. The electric fuel pump assembly is installed on the car's fuel tank and plays the role of supplying fuel to the car in the fuel supply system. However, because it is a complete system, fuel filtration is particularly important. If filtration is not performed for a long time, it can easily cause the fuel pump to become clogged, affecting the normal use of the electric fuel pump. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in the prior art by providing a fuel pump assembly with a filter structure that improves service life.

[0004] The objective of this utility model can be achieved through the following technical solution: A fuel pump assembly, comprising a fuel pump assembly having a cavity, a plunger and a return spring being disposed within the fuel pump assembly, and a fuel inlet end being disposed at the bottom of the fuel pump assembly for fuel inlet, characterized in that a filter element for filtering is disposed on the fuel pump assembly and located at the fuel inlet end, a sliding member being disposed on the fuel pump assembly that can slide up and down at the fuel inlet end, a plurality of balls being disposed between the filter element and the sliding member, and each ball having a rolling groove inside the fuel pump assembly for rolling, a first groove matching the balls being disposed on the outer wall of the filter element, a second groove matching the balls being disposed on the inner wall of the sliding member, the filter element being composed of a filter ring and a filter screen, and a fixing part being disposed on the inner wall of the fuel pump assembly, the upper end of the filter ring abutting against the lower end of the fixing part.

[0005] In the aforementioned fuel pump assembly, a stepped groove is provided on the fuel pump assembly at the fuel inlet end, and a connecting spring is provided between the sliding member and the stepped groove for the sliding member to reset.

[0006] In one of the aforementioned fuel pump assemblies, a mounting bracket for fixing is provided on the fuel pump assembly.

[0007] Compared with existing technologies, this fuel pump assembly improves the service life of the fuel pump assembly by installing a removable filter at the fuel inlet end of the fuel pump assembly to filter the fuel entering the fuel pump assembly. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of this utility model.

[0009] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0010] In the diagram, 1. Oil pump assembly; 2. Plunger; 3. Return spring; 4. Oil inlet; 5. Filter element; 6. Sliding element; 7. Ball bearing; 8. Slot 1; 9. Slot 2; 10. Filter ring; 11. Filter screen; 12. Fixing part; 13. Connecting spring; 14. Fixing bracket. Detailed Implementation

[0011] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0012] like Figure 1 , Figure 2 As shown, this fuel pump assembly includes a fuel pump assembly 1, which has a cavity. A plunger 2 and a return spring 3 are disposed within the fuel pump assembly 1. An inlet end 4 for fuel intake is disposed at the bottom of the fuel pump assembly 1. A filter element 5 for filtering is disposed on the fuel pump assembly 1 at the inlet end 4. A sliding member 6 that can slide up and down at the inlet end 4 is disposed on the fuel pump assembly 1. A plurality of balls 7 are disposed between the filter element 5 and the sliding member 6, and each ball 7 has a rolling groove inside the fuel pump assembly 1 for rolling. A first groove 8 that mates with the balls 7 is disposed on the outer wall of the filter element 5, and a second groove 9 that mates with the balls 7 is disposed on the inner wall of the sliding member 6. The filter element 5 consists of a filter ring 10 and a filter screen 11. A fixing part 12 is disposed on the inner wall of the fuel pump assembly 1, and the upper end of the filter ring 10 abuts against the lower end of the fixing part 12.

[0013] To elaborate further, when the filter element 5 needs to be installed, the sliding member 6 is moved upward, the connecting spring 13 is compressed, the second groove 9 of the sliding member 6 moves upward to the position of the ball 7, so that one end of the ball 7 can enter the second groove 9, the filter element 5 is placed into the oil inlet end 4, until the upper end of the filter ring 10 abuts against the lower end of the fixing part 12, the connecting spring 13 rebounds, the sliding member 6 moves upward, the ball 7 abuts against the inner wall of the sliding member 6, the ball 7 is moved into the first groove 8 until it is located in the first groove 8, thereby fixing the filter element 5.

[0014] To elaborate further, a stepped groove is provided on the oil pump assembly 1 at the oil inlet end 4, and a connecting spring 13 is provided between the sliding member 6 and the stepped groove for the sliding member 6 to reset.

[0015] To elaborate further, the oil pump assembly 1 is equipped with a fixing bracket 14 for fixation.

[0016] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0017] Although this document frequently uses terms such as oil pump assembly 1, plunger 2, return spring 3, oil inlet end 4, filter element 5, sliding element 6, ball bearing 7, slot one 8, slot two 9, filter ring 10, filter screen 11, fixing part 12, connecting spring 13, and fixing bracket 14, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A fuel pump assembly, comprising a fuel pump assembly (1), wherein the fuel pump assembly (1) has a cavity, a plunger (2) and a return spring (3) are disposed within the fuel pump assembly (1), and an inlet end (4) for fuel inlet is disposed at the bottom end of the fuel pump assembly (1), characterized in that, The oil pump assembly (1) is provided with a filter element (5) for filtering at the oil inlet end (4). The oil pump assembly (1) is provided with a sliding element (6) that can slide up and down at the oil inlet end (4). A plurality of balls (7) are provided between the filter element (5) and the sliding element (6). Each ball (7) has a rolling groove inside the oil pump assembly (1) for rolling. The outer wall of the filter element (5) is provided with a first groove (8) that matches the balls (7). The inner wall of the sliding element (6) is provided with a second groove (9) that matches the balls (7). The filter element (5) is composed of a filter ring (10) and a filter screen (11). The inner wall of the oil pump assembly (1) is provided with a fixing part (12). The upper end of the filter ring (10) abuts against the lower end of the fixing part (12).

2. The fuel pump assembly according to claim 1, characterized in that, The oil pump assembly (1) has a stepped groove at the oil inlet end (4), and a connecting spring (13) is provided between the sliding member (6) and the stepped groove for the sliding member (6) to reset.

3. A fuel pump assembly according to claim 1, characterized in that, The oil pump assembly (1) is provided with a fixing bracket (14) for fixing.

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