Novel fuel pump support assembly filter upper cover module

Abstract

The utility model relates to a novel fuel pump support assembly filter upper cover module which comprises a pump core support, a filter assembly and a pressure regulating valve, the filter assembly comprises a filtering cup, a filter element and a filter upper cover, an installation ring part is formed on the pump core support, a positioning clamping groove is formed in the inner wall of the installation ring part, and the pressure regulating valve is arranged on the pump core support. The outer wall of the filtering cup is provided with a positioning clamping groove, the outer wall of the filtering cup is provided with a positioning rib matched with the positioning clamping groove, the pump core support is provided with a plurality of limiting elastic buckles, the filtering cup is provided with limiting clamping hooks matched with the limiting elastic buckles, and the filtering cup is installed in the installation ring part in a pressing mode so that the positioning rib can slide in the positioning clamping groove till the limiting elastic buckles and the limiting clamping hooks are locked mutually. The novel fuel pump support assembly filter upper cover module is convenient to assemble, low in requirement for operating skills of workers during production, assembly, maintenance and replacement, easy to operate and easy to rework.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pumps, in particular to a novel fuel pump bracket assembly filter upper cover module. Background Art

[0002] The plastic fuel filter is connected in series between the electronic fuel injection pump and the engine's fuel line. The plastic filter can generally withstand a fuel pressure of ≥1Mpa. It is equipped with a daisy-shaped high-efficiency filter paper, which can efficiently filter and absorb impurities and dust in the fuel, effectively reducing the wear of the engine's cylinder liner, piston ring and other parts, and avoiding clogging of the fuel injector. The existing fuel pump assembly filter cover module is difficult to operate and requires high worker skills during assembly, resulting in difficulty for workers to get started during transfer, affecting production efficiency.

[0003] In view of the above problems, the present invention makes improvements. Utility Model Content

[0004] The utility model provides a novel fuel pump bracket assembly filter upper cover module, which solves the above-mentioned problems existing in the prior art during use.

[0005] The technical solution of the present utility model is achieved as follows:

[0006] A new type of fuel pump bracket assembly filter cover module includes a pump core bracket, a filter assembly and a pressure regulating valve. The filter assembly includes a filter cup, a filter element and a filter cover. A mounting ring is formed on the pump core bracket, a positioning groove is provided on the inner wall of the mounting ring, and a positioning rib adapted to the positioning groove is provided on the outer wall of the filter cup. The pump core bracket is provided with a plurality of limit spring buckles, and the filter cup is provided with a limit hook adapted to the limit spring buckle. The filter cup is pressed into the mounting ring so that the positioning rib slides in the positioning groove until the limit spring buckle and the limit hook are locked with each other.

[0007] Preferably, a plurality of limiting ribs are provided on the inner wall of the mounting ring portion and are gap-matched with the outer wall of the filter cup.

[0008] Preferably, the filter upper cover is provided with an upper cover oil outlet nozzle and an upper cover oil inlet nozzle which are not connected to each other, the upper cover oil outlet nozzle is connected with the oil pump oil outlet nozzle provided on the pump core bracket, the upper cover oil inlet nozzle is connected with the filter cup, and the pressure regulating valve is provided at the lower end of the filter cup and is connected with the filter cup.

[0009] Preferably, the lower end of the filter cup is provided with a first circular hole and a second circular hole distributed in a stepped manner, and a sealing ring is formed on the outer wall of the pressure regulating valve. The pressure regulating valve is rotated into the first circular hole, so that the O-ring provided on the pressure regulating valve has an interference fit with the first circular hole, and the sealing ring rests on the top wall of the second circular hole and is gap-fitted with the second circular hole.

[0010] Preferably, a limit slot communicating with the second circular hole is provided at the lower end of the filter cup, and a wire clip is provided in the limit slot and passes through the limit slot and is clamped on the pressure regulating valve below the edge sealing ring.

[0011] Preferably, a plurality of limiting fixing ribs are provided on the outside of the filter upper cover.

[0012] Preferably, the oil inlet port of the upper cover is inclined downward.

[0013] Preferably, an upper cover support plate is provided on one end of the upper cover oil outlet nozzle away from the port, and the upper cover support plate is perpendicular to the upper cover oil inlet nozzle.

[0014] To sum up, the beneficial effects of the present invention are that the filter assembly and the pump core bracket can be disassembled from each other, and the disassembly and assembly are very convenient, and can be done by toggling the limit spring buckle. During installation, the cooperation of the positioning rib and the positioning slot provides a positioning guide for the plug-in installation of the filter assembly and the mounting ring of the pump core bracket. While facilitating installation, the installation angle is guaranteed to be correct to meet the production assembly requirements, thereby making the filter assembly and the pump core bracket easy to assemble, and the operating skills requirements for workers are low during production assembly, maintenance and replacement, and it is easy to get started and easy to rework. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] 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 labor.

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is an exploded schematic diagram of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the filter assembly in the present invention;

[0020] Figure 5 This is a schematic diagram of the structure of the pump core bracket in the utility model;

[0021] Figure 6 This is a structural diagram of the filter upper cover in the utility model.

[0022] In the figure: 1. Pump core bracket; 11. Mounting ring; 12. Positioning slot; 13. Limit spring buckle; 14. Limit rib; 15. Oil pump outlet nozzle; 16. O-ring; 17. Plastic washer; 2. Filter assembly; 21. Filter cup; 211. Positioning rib; 212. Limit hook; 213. First circular hole; 214. Second circular hole; 215. Limiting slot; 216. Wire buckle; 217. Lower shell welding ring; 22. Filter element; 23. Filter cover; 231. Oil outlet nozzle of upper cover; 232. Oil inlet nozzle of upper cover; 233. Limiting fixing rib; 234. Upper cover support plate; 235. Upper cover welding groove; 236. Filter element fixing ring of upper cover; 237. Oil outlet pipeline of upper cover; 3. Pressure regulating valve; 31. Edge sealing ring. DETAILED DESCRIPTION

[0023] The following is a combination of the appended examples of the present invention Figure 1-6 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0024] As shown in the figure, a new fuel pump bracket assembly filter cover 23 module includes a pump core bracket 1, a filter component 2 and a pressure regulating valve 3. The filter component 2 is installed on the pump core bracket 1, and the pressure regulating valve 3 is installed on the filter component.

[0025] Specifically, the filter assembly 2 includes a filter cup 21, a filter element 22 and a filter cover 23. The filter element 22 is arranged in the filter cup 21. The filter cover 23 is arranged on the upper end of the filter cup 21 by a screw-on press-fitting process. In order to enhance the sealing performance of the filter assembly 2, the screw-on weld joint of the filter cover 23 is two hollow cylinders. The hollow cylinder is divided into an upper cover welding groove 235 and an upper cover filter element fixing ring 236. The upper cover welding groove 235 and the upper cover filter element fixing ring 236 are both processed and formed with a draft angle. The gap of the upper cover welding groove 235 is 0.9 mm. The wall thickness of the lower shell welding ring 217 of the filter cup 21 is 1.1mm, which is an interference fit. The inner diameter of the upper cover filter element fixing ring 235 is φ13mm, which is adapted to the filter element 22. The outer diameter of the filter element 22 limiting small round cone is φ13.1mm, which is an interference fit. The structure of the filter cover 23 installed on the upper end of the filter cup 21 ensures pipeline sealing, high connection strength, and is easy to assemble. It requires low working skills and is easy to use during production, assembly, maintenance and replacement. The pump core bracket 1 is formed with a mounting ring portion 11, and a positioning groove 12 (groove width 2.2) is provided on the inner wall of the mounting ring portion 11. mm), a positioning rib 211 (rib width 2.2mm) is provided on the outer wall of the filter cup 21 to match the positioning slot 12, a plurality of limit spring buckles 13 are provided on the pump core bracket 1, and a limit hook 212 is provided on the filter cup 21 to match the limit spring buckle 13, and a process bevel is provided on the installation side of the limit spring buckle 13 and the limit hook 212 to facilitate the installation. The filter cup 21 is pressed into the mounting ring 11 so that the positioning rib 211 slides in the positioning slot 12 until the limit spring buckle 13 and the limit hook 212 are locked with each other. The filter assembly 2 The structure installed on the pump core bracket 1 allows the filter assembly 2 and the pump core bracket 1 to be disassembled from each other, and disassembly and assembly are very convenient, which can be done by toggling the limit spring buckle 13. During installation, the cooperation of the positioning rib 211 and the positioning card groove 12 provides a positioning guide for the plug-in installation of the filter assembly 2 and the mounting ring portion 11 of the pump core bracket 1. While facilitating installation, it ensures that the installation angle is correct and meets the production assembly requirements, thereby making the filter assembly 2 and the pump core bracket 1 easy to assemble, and has low requirements on workers' operating skills during production assembly, maintenance and replacement, and is easy to use and easy to rework.

[0026] Specifically, the filter cover 23 is provided with an upper cover oil outlet nozzle 231 and an upper cover oil inlet nozzle 232 which are not connected to each other. The upper cover oil outlet nozzle 231 is connected to the oil pump oil outlet nozzle 15 provided on the pump core bracket 1. The oil pump oil outlet nozzle 15 is sleeved with an O-ring 16 and a plastic gasket 17. When the limiting spring buckle 13 and the limiting hook 212 are locked with each other, the upper cover oil outlet pipeline 218 connected to the upper cover oil outlet nozzle 231 provided on the filter cover 23 is wrapped around the oil pump oil outlet nozzle 15 and is interference fit with the O-ring 16. The oil nozzle 232 is connected to the filter cup 21, and the pressure regulating valve 3 is provided at the lower end of the filter cup 21 and is connected to the filter cup 21. The lower end of the filter cup 21 is provided with a first circular hole 213 and a second circular hole 214 distributed in a stepped manner. A sealing ring 31 is formed on the outer wall of the pressure regulating valve 3. The pressure regulating valve 3 is rotated into the first circular hole 213, so that the O-ring provided on the pressure regulating valve 3 is interference-fitted with the first circular hole 213, and the sealing ring 31 is against the top wall of the second circular hole 214 and has a clearance fit with the second circular hole 214. The lower end of 21 is provided with a limit card groove 215 connected to the second circular hole 214, and a wire clip 216 is provided in the limit card groove 215, which passes through the limit card groove 215 and is clamped on the pressure regulating valve 3 below the edge ring 31. The above-mentioned pressure regulating valve 3 is installed in the structure of the filter assembly 2. The step formed between the first circular hole 213 and the second circular hole 214 cooperates with the edge ring 31 to position the assembly of the pressure regulating valve 3 and the filter assembly 2, which is beneficial to better sealing connection between the pressure regulating valve 3 and the filter assembly 2. It can effectively avoid the phenomenon of fuel leakage caused by the movement of the O-ring, and at the same time, it has low requirements for work operating skills, is easy to use, and can meet customer needs. The wire buckle 216 can limit the displacement of the pressure regulating valve 3 in all directions, ensuring the firmness of the assembly of the pressure regulating valve 3 and the filter assembly 2, while facilitating the disassembly and assembly of the pressure regulating valve 3. When disassembling, it is only necessary to remove the wire buckle 216, thereby facilitating the assembly of the pressure regulating valve 3 and the filter assembly 2. It has low requirements for workers' operating skills during production assembly, maintenance and replacement, is easy to use, and easy to rework.

[0027] In addition, a number of limiting ribs 14 are provided on the inner wall of the mounting ring 11, which are clearance-matched with the outer wall of the filter cup 21. The inner circle of the limiting rib 14 is φ53.8mm and the outer diameter of the filter cup 21 is φ53.6mm, which ensures easy installation while increasing the installation firmness of the filter assembly 2 and the pump core bracket 1 assembly.

[0028] In addition, the filter cover 23 is provided with a plurality of limiting fixing ribs 233 on the outside. When the filter cover 23 is screwed and pressed, a slot adapted to the limiting fixing rib 233 is provided at the corresponding tooling. The cooperation between the limiting fixing rib 233 and the slot increases the firmness of the filter cover 23 and the tooling during screw riveting and pressing, effectively increases the product qualification rate, facilitates assembly, and has low operating skill requirements for workers during production, assembly, maintenance and replacement, and is easy to use.

[0029] In addition, the port of the upper cover oil inlet nozzle 232 is tilted downward by 10 degrees, which reduces the overall occupied space after the upper cover oil inlet nozzle 232 is connected to the bellows.

[0030] In addition, an upper cover support plate 234 is provided on the end of the upper cover oil outlet nozzle 231 away from the port. The upper cover support plate 234 is perpendicular to the upper cover oil inlet nozzle 232, so that the upper cover oil inlet nozzle 232 can be straight upward when the bellows is pressed, which is convenient for assembly and has low operating skill requirements for workers during production, assembly, maintenance and replacement, and is easy to use.

[0031] Working principle: The oil pump on the pump core bracket 1 is connected to the oil storage barrel, the upper cover oil outlet nozzle 231 is connected to the engine top cover oil inlet pipeline through a bellows, the upper cover oil inlet nozzle 232 is connected to the engine top cover return oil pipeline through a bellows, the pressure regulating valve 3 is connected to the oil storage barrel, the oil pump sucks the fuel in the oil storage barrel, passes through the upper cover oil outlet nozzle 231 and sends it to the engine top cover to supply oil to the engine, the fuel in the engine top cover return oil pipeline passes through the upper cover oil inlet nozzle 232 and enters the filter cup 21 inner diameter filter element 22 for filtration, and then is sent back to the oil storage barrel after the pressure is adjusted by the pressure regulating valve 3.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel fuel pump bracket assembly filter cover module, comprising a pump core bracket (1), a filter assembly (2) and a pressure regulating valve (3), wherein the filter assembly (2) comprises a filter cup (21), a filter element (22) and a filter cover (23), and is characterized in that: The pump core bracket (1) is formed with a mounting ring portion (11), the inner wall of the mounting ring portion (11) is provided with a positioning groove (12), the outer wall of the filter cup (21) is provided with a positioning rib (211) adapted to the positioning groove (12), the pump core bracket (1) is provided with a plurality of limiting spring buckles (13), the filter cup (21) is provided with a limiting hook (212) adapted to the limiting spring buckle (13), the filter cup (21) is pressed into the mounting ring portion (11) so that the positioning rib (211) slides in the positioning groove (12) until the limiting spring buckle (13) and the limiting hook (212) are locked with each other.

2. The novel fuel pump bracket assembly filter upper cover module according to claim 1 is characterized in that: A plurality of limiting ribs (14) are provided on the inner wall of the mounting ring portion (11) and are clearance-matched with the outer wall of the filter cup (21).

3. The novel fuel pump bracket assembly filter upper cover module according to claim 2 is characterized by: The filter upper cover (23) is provided with an upper cover oil outlet nozzle (231) and an upper cover oil inlet nozzle (232) which are not connected to each other. The upper cover oil outlet nozzle (231) is connected to the oil pump oil outlet nozzle (15) provided on the pump core bracket (1), and the upper cover oil inlet nozzle (232) is connected to the filter cup (21). The pressure regulating valve (3) is provided at the lower end of the filter cup (21) and is connected to the filter cup (21).

4. The novel fuel pump bracket assembly filter upper cover module according to claim 3 is characterized by: The lower end of the filter cup (21) is provided with a first circular hole (213) and a second circular hole (214) in a stepped distribution. A sealing ring (31) is formed on the outer wall of the pressure regulating valve (3). The pressure regulating valve (3) is rotated into the first circular hole (213), so that the O-ring provided on the pressure regulating valve (3) is interference-fitted with the first circular hole (213), and the sealing ring (31) is pressed against the top wall of the second circular hole (214) and is gap-fitted with the second circular hole (214).

5. The novel fuel pump bracket assembly filter upper cover module according to claim 4 is characterized in that: The lower end of the filter cup (21) is provided with a limit slot (215) communicating with the second circular hole (214), and a steel wire clip (216) is provided in the limit slot (215) and passes through the limit slot (215) and is clamped on the pressure regulating valve (3) below the edge sealing ring (31).

6. The novel fuel pump bracket assembly filter upper cover module according to claim 1 is characterized by: A plurality of limiting fixing ribs (233) are provided on the outside of the filter upper cover (23).

7. The novel fuel pump bracket assembly filter upper cover module according to claim 3 is characterized by: The upper cover oil inlet nozzle (232) is tilted downward.

8. The novel fuel pump bracket assembly filter upper cover module according to claim 7 is characterized in that: An upper cover support plate (234) is provided on one end of the upper cover oil outlet nozzle (231) away from the port, and the upper cover support plate (234) is perpendicular to the upper cover oil inlet nozzle (232).

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