Fuel pressure regulating valve

Abstract

The utility model relates to the technical field of regulating valves, and discloses a fuel pressure regulating valve which is characterized in that a filter assembly is arranged at an oil inlet, a non-return assembly is arranged at an oil return port, and the filter assembly comprises a filter sleeve, a filter element located in the filter sleeve, a threaded sleeve A fixedly arranged on the right side of the filter sleeve, an oil inlet connector and a mounting cover fixedly arranged on the right side of the oil inlet connector; a screw hole A coinciding with the oil inlet in position is formed in the left side wall of the lower shell, the screw sleeve A is screwed into the screw hole A to be fixedly connected with the lower shell, threads are arranged on the outer wall of the filter sleeve and the inner wall of the mounting cover, and the mounting cover is screwed into the filter sleeve to be fixedly connected with the filter sleeve. The fuel pressure regulating valve has the advantage of filtering fuel impurities, and solves the problems that an existing fuel pressure regulating valve generally does not have a filtering function, fuel containing the impurities can return to an oil tank again through an oil inlet connector, the burden of a fuel filter is increased, the impurities in the fuel cannot be filtered out, and the performance of an engine is affected.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically to a fuel pressure regulating valve. Background Technology

[0002] A fuel pressure regulating valve is a specialized piece of equipment in the automotive industry, primarily used to ensure stable fuel pressure in the vehicle's fuel system. Maintaining fuel pressure within the standard range ensures proper engine operation. Insufficient fuel pressure can lead to weak or no fuel injection from the injectors, while excessive fuel pressure can damage the fuel system or the injectors.

[0003] Fuel typically contains impurities, and the fuel filter in the fuel system filters the fuel entering through the inlet. When a fuel filter is used for a long time without being replaced, its filtering efficiency decreases, allowing impurities to enter the fuel rail and fuel pressure regulating valve. Current fuel pressure regulating valves often lack filtering capabilities, allowing impurities to return to the fuel tank through the inlet, increasing the burden on the fuel filter. This can lead to problems where impurities in the fuel are not filtered out, resulting in issues that affect engine performance. Utility Model Content

[0004] The purpose of this invention is to provide a fuel pressure regulating valve to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fuel pressure regulating valve, comprising an upper housing and a lower housing fixedly disposed below the upper housing. An air inlet is provided on the front side wall of the upper housing, and an oil inlet and an oil return outlet are respectively provided on the left side wall and bottom wall of the lower housing. The oil inlet is equipped with a filter assembly, and the oil return outlet is equipped with a check valve assembly. The filter assembly includes a filter sleeve, a filter element located inside the filter sleeve, a threaded sleeve A fixedly disposed on the right side of the filter sleeve, an oil inlet connector, and a mounting cap fixedly disposed on the right side of the oil inlet connector. A threaded hole A coinciding with the position of the oil inlet is provided on the left side wall of the lower housing. The threaded sleeve A is screwed into the threaded hole A and fixedly connected to the lower housing. Threads are provided on the outer wall of the filter sleeve and the inner wall of the mounting cap. The mounting cap is screwed into the filter sleeve and fixedly connected to the filter sleeve.

[0006] Preferably, the filter assembly further includes a sealing washer A fixedly disposed on the right side of the screw sleeve A and a sealing washer B fixedly disposed on the left side of the filter sleeve. After the screw sleeve A is screwed into the screw hole A, the sealing washer A is fixed between the screw sleeve A and the lower housing. After the mounting cover is screwed into the filter sleeve, the sealing washer B is fixed between the filter sleeve and the mounting cover.

[0007] Preferably, the filter assembly further includes elastic gasket A and elastic gasket B, which are respectively fixedly disposed on the left and right sides of the filter element. Elastic gasket A is in contact with the mounting cover, and elastic gasket B is in contact with the filter sleeve.

[0008] Preferably, the check valve assembly includes a check valve sleeve, a crossbeam fixedly disposed inside the check valve sleeve, a pressure plate located inside the check valve sleeve, a sliding column fixedly disposed below the pressure plate, a convex ring A and a convex ring B fixedly disposed outside the sliding column, a threaded sleeve B and an oil return connector respectively fixedly disposed on the upper and lower sides of the check valve sleeve, a threaded hole B coinciding with the position of the oil return port is opened on the bottom wall of the lower housing, the threaded sleeve B is screwed into the threaded hole B and fixedly connected to the lower housing, the crossbeam has an insertion hole extending through it from top to bottom, the sliding column is located in the insertion hole and slidably connected to the crossbeam, the diameters of the convex ring A and the convex ring B are both larger than the diameter of the insertion hole and are respectively located on the upper and lower sides of the crossbeam, and the diameter of the pressure plate is larger than the diameter of the threaded sleeve B.

[0009] Preferably, the check valve assembly further includes a sealing disc fixedly disposed above the pressure plate and a sealing washer C fixedly disposed above the threaded sleeve B. After the threaded sleeve B is screwed into the threaded hole B, the sealing washer C is fixed between the threaded sleeve B and the lower housing. The diameter of the sealing disc is the same as that of the pressure plate.

[0010] Preferably, the check valve assembly further includes a plurality of ball bearings fixedly disposed on the inner wall of the socket, the ball bearings being in rolling connection with the slide column.

[0011] Preferably, a pressure gauge is fixedly installed on the right side of the lower housing.

[0012] The beneficial effects of this utility model are as follows: When using this utility model, the filter element is placed into the filter sleeve, and the mounting cap is screwed into the filter sleeve for a fixed connection, facilitating the installation and removal of the filter element. When replacing the filter element, the mounting cap is simply unscrewed. At this time, the sealing gasket B is fixed between the filter sleeve and the mounting cap, preventing fuel leakage from the connection between the filter sleeve and the mounting cap. Screwing the threaded sleeve A into the threaded hole A and fixing it to the lower housing secures the filter sleeve to the lower housing, facilitating the installation and removal of the filter sleeve. At this time, the sealing gasket A is fixed between the threaded sleeve A and the lower housing, preventing fuel leakage from the connection between the threaded sleeve A and the lower housing. Fixing the fuel inlet pipe to the fuel inlet connector allows fuel to flow through the filter sleeve and... After the screw sleeve A is inserted, fuel enters the valve body through the inlet. As fuel passes through the filter sleeve, the filter element filters the fuel, effectively filtering impurities. When the fuel filter is used for a long time without being replaced, resulting in a decrease in filtration efficiency, the fuel pressure regulating valve can act as a filter, preventing impurities from returning to the fuel tank, reducing the burden on the fuel filter, and avoiding impact on engine performance. In summary, this invention has the beneficial effect of filtering impurities from fuel, solving the problem that existing fuel pressure regulating valves typically lack filtration functionality, allowing impurities-containing fuel to return to the fuel tank through the inlet connector, increasing the burden on the fuel filter, and causing impurities in the fuel to remain unfiltered, thus affecting engine performance. Attached Figure Description

[0013] Appendix Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Appendix Figure 2 This is a top view of the present invention;

[0015] Appendix Figure 3 For the appendix Figure 2 Sectional view at point AA;

[0016] Appendix Figure 4 For the appendix Figure 3 Enlarged view of point A in the middle;

[0017] Appendix Figure 5 For the appendix Figure 3 Enlarged view of section B in the middle.

[0018] In the diagram: 1. Upper housing; 2. Lower housing; 3. Air inlet; 4. Oil inlet; 5. Oil return port; 6. Filter sleeve; 7. Filter element; 8. Screw sleeve A; 9. Oil inlet connector; 10. Mounting cover; 11. Screw hole A; 12. Sealing washer A; 13. Sealing washer B; 14. Elastic washer A; 15. Elastic washer B; 16. Check sleeve; 17. Crossbeam; 18. Pressure plate; 19. Sliding column; 20. Convex ring A; 21. Convex ring B; 22. Screw sleeve B; 23. Oil return connector; 24. Screw hole B; 25. Insertion hole; 26. Sealing disc; 27. Sealing washer C; 28. Ball bearing; 29. ​​Pressure gauge. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figure 1-5 As shown, this utility model discloses a fuel pressure regulating valve, including an upper housing 1 and a lower housing 2 fixedly disposed below the upper housing 1. An air inlet 3 is provided on the front side wall of the upper housing 1. An oil inlet 4 and an oil return port 5 are respectively provided on the left side wall and bottom wall of the lower housing 2. A filter assembly is provided at the oil inlet 4, and a check valve assembly is provided at the oil return port 5. The filter assembly includes a filter sleeve 6, a filter element 7 located inside the filter sleeve 6, a threaded sleeve A8 fixedly disposed on the right side of the filter sleeve 6, an oil inlet connector 9, and a mounting cover 10 fixedly disposed on the right side of the oil inlet connector 9. A threaded hole A11 is provided on the left side wall of the lower housing 2, which coincides with the position of the oil inlet 4. The threaded sleeve A8 is screwed into the threaded hole A11 and fixedly connected to the lower housing 2. Threads are provided on the outer wall of the filter sleeve 6 and the inner wall of the mounting cover 10. The mounting cover 10 is screwed into the filter sleeve 6 and fixedly connected to the filter sleeve 6. In use, the filter element 7 is placed into the filter sleeve 6, and the mounting cover 10 is screwed into the filter sleeve 6 for fixed connection, facilitating the installation and removal of the filter element 7. When replacing the filter element 7, the mounting cover 10 is simply unscrewed. At this time, the sealing gasket B13 is fixed between the filter sleeve 6 and the mounting cover 10, preventing fuel leakage from the connection between the filter sleeve 6 and the mounting cover 10. The threaded sleeve A8 is screwed into the threaded hole A11 for fixed connection with the lower housing 2, fixing the filter sleeve 6 to the lower housing 2 and facilitating the installation and removal of the filter sleeve 6. At this time, the sealing gasket A12 is fixed between the threaded sleeve A8 and the lower housing 2, preventing fuel leakage from the connection between the threaded sleeve A8 and the lower housing 2. The fuel inlet pipe and fuel inlet connector 9 are then fixed. After passing through the filter sleeve 6 and the screw sleeve A8, the oil enters the valve body through the oil inlet 4. When the fuel passes through the filter sleeve 6, the filter element 7 filters the fuel, thus filtering out impurities. When the fuel filter is used for a long time without being replaced, resulting in a decrease in filtration efficiency, the fuel pressure regulating valve can play a filtering role, preventing impurities from returning to the fuel tank, reducing the burden on the fuel filter, and avoiding affecting engine performance. In summary, this utility model has the beneficial effect of filtering fuel impurities, solving the problem that existing fuel pressure regulating valves usually do not have a filtering function, and fuel containing impurities will return to the fuel tank through the oil inlet connector 9, increasing the burden on the fuel filter and causing impurities in the fuel to not be filtered out, thus affecting engine performance.

[0021] Preferably, the filter assembly further includes a sealing washer A12 fixedly disposed on the right side of the threaded sleeve A8 and a sealing washer B13 fixedly disposed on the left side of the filter sleeve 6. After the threaded sleeve A8 is screwed into the threaded hole A11, the sealing washer A12 is fixed between the threaded sleeve A8 and the lower housing 2. After the mounting cover 10 is screwed into the filter sleeve 6, the sealing washer B13 is fixed between the filter sleeve 6 and the mounting cover 10. Since the sealing washer A12 is fixed between the threaded sleeve A8 and the lower housing 2 after the threaded sleeve A8 is screwed into the threaded hole A11, it plays a sealing role, preventing fuel from leaking from the connection between the threaded sleeve A8 and the lower housing 2. Since the sealing washer B13 is fixed between the filter sleeve 6 and the mounting cover 10 after the mounting cover 10 is screwed into the filter sleeve 6, it plays a further sealing role, preventing fuel from leaking from the connection between the filter sleeve 6 and the mounting cover 10.

[0022] Preferably, the filter assembly further includes elastic washers A14 and B15 respectively fixedly disposed on the left and right sides of the filter element 7. Elastic washer A14 is in contact with the mounting cover 10, and elastic washer B15 is in contact with the filter sleeve 6. Because elastic washer A14 is in contact with the mounting cover 10, and elastic washer B15 is in contact with the filter sleeve 6, high-pressure fuel passing through the filter sleeve 6 will generate a certain impact force. Elastic washers A14 and B15 can alleviate part of this impact force, thus protecting the filter element 7.

[0023] Preferably, the check valve assembly includes a check valve sleeve 16, a crossbeam 17 fixedly disposed inside the check valve sleeve 16, a pressure plate 18 located inside the check valve sleeve 16, a sliding column 19 fixedly disposed below the pressure plate 18, a convex ring A20 and a convex ring B21 fixedly disposed outside the sliding column 19, a threaded sleeve B22 and an oil return connector 23 respectively fixedly disposed on the upper and lower sides of the check valve sleeve 16, a threaded hole B24 coinciding with the position of the oil return port 5 is opened on the bottom wall of the lower housing 2, the threaded sleeve B22 is screwed into the threaded hole B24 and fixedly connected to the lower housing 2, the crossbeam 17 has a through hole 25 extending vertically, the sliding column 19 is located in the through hole 25 and is slidably connected to the crossbeam 17, the diameters of the convex ring A20 and the convex ring B21 are both larger than the diameter of the through hole 25 and are located on the upper and lower sides of the crossbeam 17 respectively, and the diameter of the pressure plate 18 is larger than the diameter of the threaded sleeve B22. Since the sliding column 19 is slidably connected to the crossbeam 17 within the insertion hole 25, the diameters of the convex rings A20 and B21 are both larger than the diameter of the insertion hole 25 and are located on the upper and lower sides of the crossbeam 17 respectively. The diameter of the pressure plate 18 is larger than the diameter of the threaded sleeve B22. When fuel flows out, the fuel will push the pressure plate 18 downward, causing the sliding column 19 to move downward. The convex ring A20 will abut against the crossbeam 17, and the fuel will flow out from the gap between the pressure plate 18 and the check sleeve 16. When fuel backflow occurs, the fuel will push the pressure plate 18 upward, causing the sliding column 19 to move upward. The convex ring B21 will abut against the crossbeam 17, and the pressure plate 18 will block the inner hole of the threaded sleeve B22 to prevent fuel backflow.

[0024] Preferably, the check valve assembly further includes a sealing disc 26 fixedly disposed above the pressure plate 18 and a sealing washer C27 fixedly disposed above the threaded sleeve B22. After the threaded sleeve B22 is screwed into the threaded hole B24, the sealing washer C27 is fixed between the threaded sleeve B22 and the lower housing 2. The diameter of the sealing disc 26 is the same as that of the pressure plate 18. Since the sealing washer C27 is fixed between the threaded sleeve B22 and the lower housing 2 after the threaded sleeve B22 is screwed into the threaded hole B24, it plays a sealing role, preventing fuel from leaking from the connection between the threaded sleeve B22 and the lower housing 2. Since the diameter of the sealing disc 26 is the same as that of the pressure plate 18, when the pressure plate 18 blocks the inner hole of the threaded sleeve B22, the sealing disc 26 will seal the connection between the pressure plate 18 and the threaded sleeve B22, thus preventing fuel from flowing out.

[0025] Preferably, the check valve assembly further includes a plurality of ball bearings 28 fixedly disposed on the inner wall of the socket 25, the ball bearings 28 being tactilely connected to the slide post 19. Because the ball bearings 28 are tactilely connected to the slide post 19, they facilitate the up-and-down sliding of the slide post 19, preventing the slide post 19 from jamming.

[0026] Preferably, a pressure gauge 29 is fixedly installed on the right side of the lower housing 2. The fixed installation of the pressure gauge 29 on the right side of the lower housing 2 facilitates the monitoring of oil pressure during maintenance.

[0027] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A fuel pressure regulating valve, comprising an upper housing (1) and a lower housing (2) fixedly disposed below the upper housing (1), wherein an air inlet (3) is provided on the front side wall of the upper housing (1), and an oil inlet (4) and an oil return outlet (5) are respectively provided on the left side wall and bottom wall of the lower housing (2), characterized in that: A filter assembly is provided at the oil inlet (4), and a check valve assembly is provided at the oil return port (5). The filter assembly includes a filter sleeve (6), a filter element (7) located inside the filter sleeve (6), a threaded sleeve A (8) fixedly installed on the right side of the filter sleeve (6), an oil inlet connector (9), and a mounting cover (10) fixedly installed on the right side of the oil inlet connector (9). A threaded hole A (11) coinciding with the position of the oil inlet (4) is provided on the left side wall of the lower housing (2). The threaded sleeve A (8) is screwed into the threaded hole A (11) and fixedly connected to the lower housing (2). Threads are provided on the outer wall of the filter sleeve (6) and the inner wall of the mounting cover (10). The mounting cover (10) is screwed into the filter sleeve (6) and fixedly connected to the filter sleeve (6).

2. The fuel pressure regulating valve according to claim 1, characterized in that: The filter assembly also includes a sealing washer A (12) fixedly disposed on the right side of the screw sleeve A (8) and a sealing washer B (13) fixedly disposed on the left side of the filter sleeve (6). After the screw sleeve A (8) is screwed into the screw hole A (11), the sealing washer A (12) is fixed between the screw sleeve A (8) and the lower housing (2). After the mounting cover (10) is screwed into the filter sleeve (6), the sealing washer B (13) is fixed between the filter sleeve (6) and the mounting cover (10).

3. A fuel pressure regulating valve according to claim 1, characterized in that: The filter assembly also includes elastic gaskets A (14) and B (15) fixedly disposed on the left and right sides of the filter element (7), respectively. The elastic gasket A (14) is in contact with the mounting cover (10), and the elastic gasket B (15) is in contact with the filter sleeve (6).

4. A fuel pressure regulating valve according to claim 1, characterized in that: The check valve assembly includes a check sleeve (16), a crossbeam (17) fixedly installed inside the check sleeve (16), a pressure plate (18) located inside the check sleeve (16), a sliding column (19) fixedly installed below the pressure plate (18), a convex ring A (20) and a convex ring B (21) fixedly installed outside the sliding column (19), a threaded sleeve B (22) and an oil return connector (23) fixedly installed on the upper and lower sides of the check sleeve (16), respectively. The bottom wall of the lower housing (2) is provided with an oil return port (5). The screw hole B (24) overlaps with the screw hole B (22), and the screw sleeve B (22) is screwed into the screw hole B (24) and fixedly connected to the lower housing (2). The crossbeam (17) has a through hole (25) through the top and bottom. The sliding column (19) is located in the through hole (25) and is slidably connected to the crossbeam (17). The diameters of the convex ring A (20) and the convex ring B (21) are both larger than the diameter of the through hole (25) and are located on the top and bottom sides of the crossbeam (17) respectively. The diameter of the pressure plate (18) is larger than the diameter of the screw sleeve B (22).

5. A fuel pressure regulating valve according to claim 4, characterized in that: The check valve assembly also includes a sealing disc (26) fixedly disposed above the pressure plate (18) and a sealing washer C (27) fixedly disposed above the threaded sleeve B (22). After the threaded sleeve B (22) is screwed into the threaded hole B (24), the sealing washer C (27) is fixed between the threaded sleeve B (22) and the lower housing (2). The diameter of the sealing disc (26) is the same as that of the pressure plate (18).

6. A fuel pressure regulating valve according to claim 4, characterized in that: The check valve assembly also includes a number of ball bearings (28) fixedly disposed on the inner wall of the socket (25), the ball bearings (28) being tumbledly connected to the slide (19).

7. A fuel pressure regulating valve according to claim 1, characterized in that: A pressure gauge (29) is fixedly installed on the right side of the lower housing (2).

Images