Fuel oil electromagnetic valve

Abstract

The utility model provides a fuel oil electromagnetic valve which is used for solving the problem that in the prior art, in order to maintain the normally open or normally closed state of an electromagnetic valve, continuous power supply is needed. The electromagnetic valve comprises a shell, a plurality of electromagnets are arranged in the circumferential direction of a support, a connecting rod is arranged in the support in a sliding mode, an upper magnetic plate is fixed to the top end of the connecting rod, a lower magnetic plate is fixed to the bottom end of the connecting rod, a guide shaft is arranged on the upper magnetic plate, a guide block is fixed to the side wall of the guide shaft, the guide shaft is sleeved with a guide sleeve, and an N-shaped guide groove is formed in the side wall of the guide sleeve. The guide groove comprises an inclined groove, the two ends of the inclined groove are communicated with vertical grooves, the guide blocks slide along the guide groove, first springs are arranged in the vertical grooves, a plunger is arranged at the bottom end of the lower magnetic plate, and a rotating device is arranged on the guide sleeve or the guide shaft. Through cooperation of the electromagnet, the upper magnetic plate, the lower magnetic plate and the guide groove, the electromagnetic valve can achieve the normally-open working state and the normally-closed working state, and the application flexibility and adaptability of the electromagnetic valve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of solenoid valves, in particular to a fuel solenoid valve. Background Technique

[0002] In a fuel system, as a key component for controlling fuel flow, the performance of a solenoid valve directly affects the working efficiency of the engine, fuel economy, and the overall operating reliability. Traditional fuel solenoid valves are often designed only for a single working mode of normally open or normally closed. To maintain the normally open or normally closed state of the solenoid valve, traditional designs usually require continuous power supply, which not only increases the energy consumption of the system but also may cause heating and wear of electromagnetic components during long-term operation, affecting the service life of the solenoid valve. Content of the Utility Model

[0003] The utility model provides a fuel solenoid valve, which solves the problem of continuous power supply required in the prior art to maintain the normally open or normally closed state of the solenoid valve.

[0004] The technical solution of the utility model is realized as follows:

[0005] A fuel solenoid valve includes a housing. An oil inlet and an oil outlet are provided at the bottom end of the housing. A bracket is fixed inside the housing. A plurality of electromagnets are arranged circumferentially on the bracket. A connecting rod slides inside the bracket. An upper magnetic plate is fixed at the top end of the connecting rod, and a lower magnetic plate is fixed at the bottom end of the connecting rod. The ends with the same polarity of the upper magnetic plate and the lower magnetic plate are close to each other. A guiding shaft is provided on the upper magnetic plate. A guiding block is fixed on the side wall of the guiding shaft. A guiding sleeve is sleeved on the guiding shaft. An N-shaped guiding groove is provided on the side wall of the guiding sleeve. The guiding groove includes an inclined groove, and the two ends of the inclined groove are communicated with vertical grooves. The guiding block slides along the guiding groove. First springs are arranged in the vertical grooves, and the movable ends of the first springs are all close to the inclined groove. A plunger is provided at the bottom end of the lower magnetic plate, and the plunger can block the oil inlet or the oil outlet. A rotating device is provided on the guiding sleeve or the guiding shaft.

[0006] Furthermore, a limiting device is provided at the intersection of the inclined groove and the vertical groove. The limiting device includes a limiting groove provided on the side wall of the guiding groove. The limiting groove is connected with a limiting block through a second spring. The two ends of the limiting block are provided with bevels. The limiting device can prevent the guiding block from sliding out of the vertical groove due to vibration or other external forces, thereby protecting the normal working state of the solenoid valve and avoiding possible leakage or other failures.

[0007] Furthermore, the rotating device on the guiding sleeve includes a connecting rod. An arc-shaped sliding groove is provided on the housing, and the connecting rod slides along the arc-shaped sliding groove. A connecting hole is provided at the top end of the housing, and a sliding rod that slides in the connecting hole is provided at the top end of the guiding shaft. The cooperation of the connecting hole and the connecting rod prevents unnecessary rotation of the guiding shaft during the process of rotating the guiding sleeve, ensuring that the guiding block can smoothly enter and leave the vertical groove, thereby guaranteeing the normal operation of the solenoid valve.

[0008] Further, the rotating device on the guiding shaft includes a rotating rod that penetrates through the top end of the housing. A driving rod is fixed to the side wall of the outer end of the rotating rod outside the housing. A pin shaft is inserted through the end of the driving rod. There are two pin shaft holes provided at the top end of the housing. When the guiding block is placed in the vertical groove, the pin shaft cooperates with the corresponding pin shaft hole. The cooperation between the pin shaft and the pin shaft hole ensures the precise positioning of the rotating rod at a specific position, which helps the guiding block to correctly enter the vertical groove.

[0009] Further, a plurality of guiding grooves are evenly distributed along the circumferential direction of the guiding sleeve. Support plates are fixed to one end of each of the first springs close to the inclined groove. Since the guiding blocks are more evenly stressed, stress concentration caused by uneven stress can be reduced, thereby improving the durability of the entire system.

[0010] Further, the bracket is fixedly and sealingly connected to the housing, and the bracket is slidably and sealingly connected to the connecting rod. By using sealing technology, oil leakage can be effectively prevented, ensuring the normal operation of the solenoid valve and the sealing performance of the oil circuit system.

[0011] Beneficial effects that can be produced by this technical solution.

[0012] With the cooperation of the electromagnet, the upper magnetic plate, the lower magnetic plate and the guiding groove in the present utility model, the solenoid valve can achieve two working states of normally open and normally closed, increasing the flexibility and adaptability of the application of the solenoid valve. And in most cases, it does not need to be continuously powered on, only needs to be powered on briefly when the state needs to be changed, thus greatly reducing the energy consumption. Since the solenoid valve is in a non-powered state most of the time, the heating and wear of the electromagnetic components are reduced, thereby extending the overall service life of the solenoid valve. By attracting the magnetic plate on one side and repelling the magnetic plate on the other side with the electromagnet, the opening and closing actions of the solenoid valve are made more rapid and accurate. Due to the relatively simple structure and stable operation, the downtime and maintenance cost caused by faults are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0015] Figure 2 is a cross-sectional view of the present utility model;

[0016] Figure 3Schematic diagram of the three-dimensional structure inside the utility model;

[0017] Figure 4 Top view of the utility model;

[0018] Figure 5 Schematic diagram of the limiting device of the utility model;

[0019] Figure 6 Schematic diagram of the second embodiment of the utility model.

[0020] Wherein: 1. housing, 2. oil inlet, 3. oil outlet, 4. bracket, 5. electromagnet, 6. connecting rod, 7. upper magnetic plate, 8. lower magnetic plate, 9. guide shaft, 10. guide block, 11. guide sleeve, 12. guide groove, 13. inclined groove, 14. vertical groove, 15. first spring, 16. plunger, 17. rotating device, 18. limiting groove, 19. limiting block, 20. second spring, 21. connecting rod, 22. arc-shaped sliding groove, 23. connecting hole, 24. sliding rod, 25. rotating rod, 26. driving rod, 27. pin shaft, 28. pin shaft hole, 29. support plate. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] The first embodiment is as Figure 1-3As shown in the figure, this embodiment provides a fuel solenoid valve, which includes a housing 1. An oil inlet 2 and an oil outlet 3 are provided at the bottom end of the housing 1. A bracket 4 is fixed inside the housing 1. A plurality of electromagnets 5 are provided circumferentially on the bracket 4. A connecting rod 6 slides inside the bracket 4. An upper magnetic plate 7 is fixed to the top end of the connecting rod 6, and a lower magnetic plate 8 is fixed to the bottom end of the connecting rod 6. The ends with the same polarity of the upper magnetic plate 7 and the lower magnetic plate 8 are close to each other. A guide shaft 9 is provided on the upper magnetic plate 7. A guide block 10 is fixed to the side wall of the guide shaft 9. A guide sleeve 11 is sleeved on the guide shaft 9. An N-shaped guide groove 12 is provided on the side wall of the guide sleeve 11. The guide groove 12 includes an inclined groove 13, and vertical grooves 14 are communicated with both ends of the inclined groove 13. The guide block 10 slides along the guide groove 12. First springs 15 are provided in the vertical grooves 14, and the movable ends of the first springs 15 are all close to the inclined groove 13. A plunger 16 is provided at the bottom end of the lower magnetic plate 8. The plunger 16 can block the oil inlet 2 or the oil outlet 3. A rotating device 17 is provided on the guide sleeve 11 or the guide shaft 9. The upper magnetic plate 7 and the lower magnetic plate 8 are existing permanent magnets. The bracket 4 includes a sleeve sleeved on the connecting rod 6. Baffles are provided at both ends of the sleeve, and positioning holes are correspondingly provided on the baffles. The positioning holes can fix the iron core of the solenoid valve.

[0023] During use, if it is necessary to keep the solenoid valve in the normally open state, rotate the device 17 to make the guide block 10 slide along the inclined groove 13 to the highest point. At this time, the guide block 10 is pushed upward by the first spring 15 below. Through the guide shaft 9, the upper magnetic plate 7 and the connecting rod 6, the lower magnetic plate 8 drives the plunger 16 to approach the electromagnet 5, and the plunger 16 moves away from the oil inlet 2. At this time, the solenoid valve is in the open state. When it is necessary to temporarily close the solenoid valve, energize the electromagnet 5 to make the electromagnet 5 attract the upper magnetic plate 7 to approach. The upper magnetic plate 7 moves downward along the vertical groove 14 against the resistance of the first spring 15. At the same time, the lower magnetic plate 8 drives the plunger 16 to move away from the electromagnet 5, so that the oil inlet 2 is temporarily closed. After the electromagnet 5 is powered off, the first spring 15 applies a thrust to the guide block 10, making the solenoid valve in the normally open state. If it is necessary to keep the solenoid valve in the normally closed state, rotate the device 17 to make the guide block 10 slide along the inclined groove 13 to the lowest point and reverse the magnetic pole of the electromagnet 5. At this time, the upper magnetic plate 7 approaches the electromagnet 5 under the action of gravity, and the plunger 16 closes the oil inlet 2. At this time, the solenoid valve is in the closed state. When it is necessary to temporarily open the solenoid valve, energize the solenoid valve. The solenoid valve attracts the lower magnetic plate 8 to approach. The lower magnetic plate 8 compresses the first spring 15 through the connecting rod 6, the upper magnetic plate 7, the guide shaft 9 and the guide block 10, and at the same time drives the plunger 16 to move away from the oil inlet 2. At this time, the oil inlet 2 is temporarily opened. After the electromagnet 5 is powered off, under the thrust of the first spring 15 and the action of gravity, the plunger 16 closes the oil inlet 2. Through the attraction of the electromagnet 5 to the upper magnetic plate 7 or the lower magnetic plate 8 and the commutation of the guide groove 12, the solenoid valve can have both the normally open and normally closed functions, saving a large amount of energy, increasing the service life of the solenoid valve, and when the solenoid valve attracts one end of the magnetic plate, it can apply a repulsive force to the other magnetic plate, enabling the solenoid valve to respond quickly.

[0024] As Figure 3 , 5As shown, a limiting device is provided at the intersection of the inclined groove 13 and the vertical groove 14. The limiting device includes a limiting groove 18 provided on the side wall of the guiding groove 12. The limiting groove 18 is connected with a limiting block 19 through a second spring 20. Both ends of the limiting block 19 are provided with bevel edges. During use, when the guiding block 10 enters the vertical groove 14 along the inclined groove 13, the guiding block 10 abuts against the bevel edge of the limiting block 19, applying a component force to overcome the second spring 20 through the bevel edge. At the same time, the limiting block 19 will apply a certain resistance to the guiding block 10, so that the limiting block 19 can be placed in the limiting groove 18. At this time, the guiding block 10 can enter the vertical groove 14. When the guiding block 10 slides out of the vertical groove 14, it is the same as the way of sliding in. By the limiting block 19 applying resistance to the guiding block 10, it is made that the guiding block 10 is not easy to slide out of the vertical groove 14, achieving the effect of preventing the guiding block 10 from sliding out of the vertical groove 14 and causing the first spring 15 to be unable to apply a thrust to the guiding block 10. The existence of the limiting device effectively prevents the accidental sliding out of the guiding block 10 in the vertical groove 14, and can ensure that the guiding block 10 remains in the correct position, thus ensuring the stability and reliability of the solenoid valve.

[0025] As Figure 2-4 shown, the rotating device 17 on the guiding sleeve 11 includes a connecting rod 21. An arc-shaped sliding groove 22 is provided on the housing 1. The connecting rod 21 slides along the arc-shaped sliding groove 22. A connecting hole 23 is provided at the top end of the housing 1. A sliding rod 24 that slides in the connecting hole 23 is provided at the top end of the guiding shaft 9. The connecting rod 21 is fixedly connected with the guiding sleeve 11. During use, the relative rotation of the guiding sleeve 11 and the guiding shaft 9 can be realized by the sliding of the connecting rod 21 along the arc-shaped sliding groove 22. The rotation of the sliding rod 24 can be restricted through the connecting hole 23, preventing unnecessary rotation of the guiding shaft 9 during the rotation of the guiding sleeve 11, so that the guiding block 10 cannot enter the vertical groove 14, thus avoiding the wrong position of the guiding block 10 and ensuring the correct working state of the solenoid valve. And the solenoid valve can be manually opened or closed through the connecting rod 21 placed outside the housing 1. By manually controlling the connecting rod 21 placed outside the housing 1 by the user, the relative rotation of the guiding sleeve 11 and the guiding shaft 9 is realized, greatly simplifying the operation process. Without disassembling the solenoid valve or using professional tools, the normally open / normally closed state of the solenoid valve can be easily adjusted, improving the convenience of use.

[0026] As Figure 2-3As shown, the guide grooves 12 are evenly distributed along the circumference of the guide sleeve 11, and a support plate 29 is fixed to one end of the first spring 15 close to the inclined groove 13. There are preferably two guide grooves 12, and the two guide grooves 12 can not only provide sufficient support and thrust distribution, but also facilitate processing, production, assembly and debugging. By evenly distributing multiple guide grooves 12 along the circumference of the guide sleeve 11, it can be ensured that the guide block 10 is subjected to uniform thrust during the sliding process. This evenly distributed force helps the guide shaft 9 or the connecting rod 6 to slide more smoothly, reducing the risk of jamming due to uneven force, which not only improves the operating efficiency of the system, but also increases the overall stability and reliability. The fixed seal can be sealed by a conventional sealing ring, and the sliding seal can be sealed by a sliding sealing ring. Both the conventional sealing ring and the sliding sealing ring are prior art.

[0027] The bracket 4 is fixedly sealed and connected to the housing 1 through a sealing ring, and the bracket 4 is slidingly sealed and connected to the connecting rod 6 through a sliding sealing ring. Both the fixed seal and the sliding seal are prior art. The fixed sealing connection between the bracket 4 and the housing 1 ensures the stability and sealing of the entire solenoid valve system during long-term operation, effectively prevents oil from leaking from the joint between the housing 1 and the bracket 4, and ensures the integrity and reliability of the system. The sliding sealing connection between the bracket 4 and the connecting rod 6 allows the connecting rod 6 to slide smoothly in the bracket 4 while maintaining a high degree of sealing, reducing wear caused by friction between sliding parts, and effectively preventing oil from leaking through the sliding gap, thereby improving the sealing performance of the entire system.

[0028] The first spring 15 and the second spring 20 can be sleeved on the corresponding support rod. The support rod provides support for the spring, preventing the spring from tilting or shifting when subjected to force, ensuring the stability and correctness of the spring, thereby improving the stability and reliability of the entire system, and can also serve as a stable installation base for the spring, helping to improve the accuracy and consistency of spring installation.

[0029] The second embodiment, as Figure 6As shown, the difference from the first embodiment is that the rotating device 17 on the guide shaft 9 includes a rotating rod 25. The rotating rod 25 penetrates through the top end of the housing 1. A driving rod 26 is fixed to the side wall of the outer end of the rotating rod 25 outside the housing 1. A pin shaft 27 is inserted through the end of the driving rod 26. Two pin shaft holes 28 are provided at the top end of the housing 1. When the guide block 10 is placed in the vertical groove 14, the pin shaft 27 cooperates with the corresponding pin shaft hole 28. The guide sleeve 11 is fixedly connected to the housing 1. The rotating rod 25 is fixed on the guide shaft 9. During use, the rotating rod 25 is driven to rotate by the driving rod 26, and the guide shaft 9 is driven to rotate by the rotating rod 25. When the driving rod 26 drives the pin shaft 27 to correspond to the pin shaft hole 28, the pin shaft 27 is placed in the pin shaft hole 28. When the rotating rod 25 needs to be telescoped, the driving rod 26 slides along the pin shaft hole 28. Through the precise cooperation of the pin shaft 27 and the pin shaft hole 28, it can be ensured that the guide shaft 9 can be firmly locked when rotating to a specific position, making the state adjustment of the solenoid valve more accurate and reliable, and reducing the risk of performance fluctuations or failures caused by position deviations. When the pin shaft 27 is placed in the pin shaft hole 28, it can prevent the rotating rod 25 from rotating at an inappropriate time, thereby avoiding the wrong position of the guide block 10. Through the simple action of inserting or pulling out the pin shaft 27 from the pin shaft hole 28, the rotating rod 25 can be quickly locked or unlocked, which is convenient for operation.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A fuel solenoid valve, comprising a housing (1), the bottom end of the housing (1) is provided with an oil inlet (2) and an oil outlet (3), characterized in that: A bracket (4) is fixed inside a housing (1). A plurality of electromagnets (5) are arranged circumferentially on the bracket (4). A connecting rod (6) slides inside the bracket (4). An upper magnetic plate (7) is fixed to the top end of the connecting rod (6), and a lower magnetic plate (8) is fixed to the bottom end of the connecting rod (6). The ends with the same polarity of the upper magnetic plate (7) and the lower magnetic plate (8) are close to each other. A guiding shaft (9) is provided on the upper magnetic plate (7). A guiding block (10) is fixed to the side wall of the guiding shaft (9). A guiding sleeve (11) is sleeved on the guiding shaft (9). An N-shaped guiding groove (12) is provided on the side wall of the guiding sleeve (11). The guiding groove (12) includes an inclined groove (13), and vertical grooves (14) are communicated with both ends of the inclined groove (13). The guiding block (10) slides along the guiding groove (12). First springs (15) are provided in the vertical grooves (14), and the movable ends of the first springs (15) are all close to the inclined groove (13). A plunger (16) is provided at the bottom end of the lower magnetic plate (8), and the plunger (16) can close the oil inlet (2) or the oil outlet (3). A rotating device (17) is provided on the guiding sleeve (11) or the guiding shaft (9).

2. The fuel solenoid valve according to claim 1, characterized in that: A limiting device is provided at the intersection of the inclined groove (13) and the vertical groove (14). The limiting device includes a limiting groove (18) provided on the side wall of the guiding groove (12). The limiting groove (18) is connected with a limiting block (19) through a second spring (20). The two ends of the limiting block (19) are both provided with bevel edges.

3. A fuel solenoid valve according to claim 1, characterized in that: The rotating device (17) on the guiding sleeve (11) includes a connecting rod (21). An arc-shaped sliding groove (22) is provided on the housing (1) in a penetrating manner. The connecting rod (21) slides along the arc-shaped sliding groove (22). A connecting hole (23) is provided at the top end of the housing (1). A sliding rod (24) that slides in the connecting hole (23) is provided at the top end of the guiding shaft (9).

4. A fuel solenoid valve according to claim 1, characterized in that: The rotating device (17) on the guiding shaft (9) includes a rotating rod (25). The rotating rod (25) penetrates through the top end of the housing (1). A driving rod (26) is fixed to the side wall of the end of the rotating rod (25) outside the housing (1). A pin shaft (27) is provided through the end of the driving rod (26). Two pin shaft holes (28) are provided at the top end of the housing (1). When the guiding block (10) is placed in the vertical groove (14), the pin shaft (27) cooperates with the corresponding pin shaft hole (28).

5. A fuel solenoid valve according to claim 1, characterized in that: A plurality of the guiding grooves (12) are evenly distributed circumferentially along the guiding sleeve (11). A supporting plate (29) is fixed to one end of each of the first springs (15) close to the inclined groove (13).

6. The fuel solenoid valve according to claim 1, wherein: The bracket (4) and the housing (1) are fixedly and sealingly connected through a sealing ring. The bracket (4) and the connecting rod (6) are slidably and sealingly connected through a sliding sealing ring.

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