A leak-proof assembly for an electronic valve

Abstract

The application discloses an anti-leakage assembly of an electronic valve, and belongs to the field of oil injection equipment. Mainly comprising a valve seat, one side of the valve seat is fixedly connected with an oil inlet pipe, one end of the valve seat is fixedly installed with an oil return pipe, one side of the valve seat is fixedly connected with a valve body, the inner side of the valve body is connected with a sealing adjustment assembly, one side of the electromagnetic valve is connected with a valve rod, the outer side of the valve rod is connected with an elastic bellows, one end of the valve rod is connected with a tight sealing assembly, and the outer side of the top pressing end is connected with a gasket. The anti-leakage assembly of the electronic valve is characterized in that the elastic bellows is arranged on the outer side of the valve rod, the elastic bellows has certain radial torsional resistance, and multiple internally supported rubber rings are mutually superposed and sealed, so that the sealing property is improved; the top pressing end and the gasket with elastic extrusion are arranged at the end to perform double sealing adjustment, the anti-leakage performance of the oil nozzle is further improved, and the stability of the oil nozzle equipment is ensured.

Description

Technical Field

[0001] This application relates to the field of oil injection equipment, specifically a leak-proof component for an electronic valve. Background Technology

[0002] The patent with announcement number CN206352553U specifically discloses a bypass-type electronically controlled fuel injector. This patent uses a control slider set inside the control chamber of the valve body, which contacts the middle block of the fuel injector. This reduces the initial injection rate and speeds up the needle valve's seat response, resulting in hydraulic balance inside the nozzle section and no static pressure difference, allowing the fuel injector to maintain no static leakage during use.

[0003] The aforementioned patent uses a sealing and leak-proof structure to connect a sealing ring structure to the outside of the valve stem for sealing treatment, achieving static leak-free operation. During operation, the solenoid valve stem and valve body need to be adjusted according to the fuel injection situation, causing the sealing ring inside the valve stem and valve body to rub against each other many times, resulting in wear and a decrease in sealing performance. The decrease in sealing performance will cause a decrease in the stability of the valve stem during operation, thereby breaking the static balance inside the nozzle and easily causing fuel leakage. This not only wastes fuel but may also cause fire hazards and even affect the normal operation of the engine. Therefore, it is necessary to provide a leak-proof component for electronic valves to solve the above problems. Summary of the Invention

[0004] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide a leak-proof component for an electronic valve, which achieves a certain degree of adaptive adjustment performance during operation to avoid affecting the sealing effect.

[0005] The technical solution adopted by this application to solve its technical problem is: a leak-proof component for an electronic valve, comprising: a valve seat, an oil inlet pipe fixedly connected to one end of the valve seat, an oil return pipe fixedly installed at one end of the valve seat, and a valve body fixedly connected to one side of the valve seat;

[0006] A sealing adjustment assembly is connected to the inner side of the valve body. The sealing adjustment assembly includes:

[0007] A solenoid valve is fixedly connected to the inside of a valve seat. A valve stem is connected to one side of the solenoid valve, and an elastic bellows is connected to the outside of the valve stem.

[0008] One end of the valve stem is connected to a pressure sealing assembly, the pressure sealing assembly comprising:

[0009] A top pressure end is slidably connected to the outside of the valve stem. A washer is connected to the outside of the top pressure end, and an elastic connector is connected to the inside of the top pressure end.

[0010] Furthermore, an oil nozzle is fixedly connected to one end of the valve body, and an oil filling groove is provided on the inner side of the oil nozzle.

[0011] Furthermore, a buffer connector is fixedly connected to one side of the solenoid valve, and a limiting seat that is slidably connected to the valve seat is fixedly connected to one side of the buffer connector.

[0012] Furthermore, the valve stem is fixedly connected to one side of the limiting seat, and the valve stem is slidably connected to the valve body.

[0013] Furthermore, a rubber ring is connected to the outer side of the elastic bellows, and a support ring is filled inside the rubber ring.

[0014] Furthermore, the outer wall of the top pressing end is provided with a groove that matches the washer.

[0015] Furthermore, the inner side of the top pressing end is slidably connected to a guide rod that is fixedly connected to an elastic connector, and the inner side of the top pressing end is provided with a guide limiting groove that is slidably connected to the guide rod.

[0016] Furthermore, a threaded joint that is threaded to the valve stem is provided on one side of the guide rod, and a rubber tube is connected to one outer end of the guide rod.

[0017] The beneficial effects of this application are as follows: The leak-proof component of the electronic valve provided by this application improves the leak-proof performance of the nozzle by setting an elastic bellows on the outside of the valve stem. The elastic bellows has a certain radial torsional resistance, and multiple internally supported rubber rings are stacked and sealed to improve the sealing performance. The end is provided with an elastic compression top end and a gasket for double sealing adjustment, which further improves the leak-proof performance of the nozzle and ensures the stability of the nozzle equipment.

[0018] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. These will be further described in detail below with reference to figures. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of a leak-proof component for an electronic valve according to this application;

[0021] Figure 2 for Figure 1 A partial cross-sectional structural diagram of the central sealing adjustment assembly;

[0022] Figure 3 for Figure 2A schematic diagram of a partial cross-sectional structure of a medium-elasticity bellows;

[0023] Figure 4 for Figure 3 A partial cross-sectional view of the compression sealing assembly in section 2;

[0024] The following are the labeling elements in the figure:

[0025] 1. Valve seat; 2. Oil inlet pipe; 3. Oil return pipe; 4. Valve body; 5. Oil nozzle; 6. Oil filling groove;

[0026] 7. Sealing adjustment assembly; 701. Solenoid valve; 702. Buffer connector; 703. Limit seat; 704. Valve stem; 705. Elastic bellows; 706. Rubber ring; 707. Support ring;

[0027] 8. Tight-fitting sealing assembly; 801. Top pressure end; 802. Slot; 803. Washer; 804. Elastic connector; 805. Guide limiting groove; 806. Guide rod; 807. Threaded joint; 808. Rubber hose. Detailed Implementation

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0030] like Figure 1 - Figure 4 As shown, this application provides a leak-proof component for an electronic valve, including: a valve seat 1, an oil inlet pipe 2 fixedly connected to one side of the valve seat 1, the oil inlet pipe 2 being connected to an external oil tank for the introduction of external fuel, a return oil pipe 3 fixedly installed at one end of the valve seat 1 for the recovery of unburned fuel, and a valve body 4 fixedly connected to one side of the valve seat 1 for the external support of the oil circuit.

[0031] like Figure 2 As shown, a fuel nozzle 5 is fixedly connected to one end of the valve body 4. A fuel injection groove 6 is provided on the inner side of the fuel nozzle 5. The fuel injection groove 6 runs through the inner side of the valve body 4 and the fuel nozzle 5, and is connected to the fuel inlet pipe 2. It is the outlet for fuel delivery, which facilitates the fuel to be sprayed out through the end of the fuel nozzle 5.

[0032] A sealing adjustment component 7 is connected to the inner side of the valve body 4. The sealing adjustment component 7 improves the sealing performance when the valve stem 704 moves.

[0033] A solenoid valve 701 is fixedly connected to the inside of the valve seat 1. A valve stem 704 is connected to one side of the solenoid valve 701, and an elastic bellows 705 is connected to the outside of the valve stem 704.

[0034] One end of the valve stem 704 is connected to a tight-fitting sealing assembly 8, which improves the sealing performance between the end of the valve stem 704 and the oil nozzle 5.

[0035] like Figure 2 As shown, a buffer connector 702 is fixedly connected to one side of the solenoid valve 701, and a limit seat 703 that is slidably connected to the valve seat 1 is fixedly connected to one side of the buffer connector 702. The solenoid valve 701 is used to control the position of the valve stem 704 and to control the opening and closing adjustment of fuel injection. The buffer connector 702 improves the buffer protection during adjustment.

[0036] like Figure 2 As shown, the valve stem 704 is fixedly connected to one side of the limiting seat 703, and the valve stem 704 is slidably connected to the valve body 4. The limiting seat 703 slides inside the valve seat 1, and the valve stem 704 slides inside the valve body 4, thereby improving the stability of the adjustment.

[0037] like Figure 3 As shown, a rubber ring 706 is connected to the outside of the elastic bellows 705. A support ring 707 is filled inside the rubber ring 706. The outer ring diameter of the rubber ring 706 is slightly larger than that of the elastic bellows 705. The internal metal support ring 707 improves the rigidity of the rubber ring 706 adjustment, ensuring that the elastic bellows 705 can be squeezed against the side wall after compression, thereby improving the sealing performance of the valve stem 704 sliding adjustment.

[0038] A top pressure end 801 is slidably connected to the outside of the valve stem 704. A washer 803 is connected to the outside of the top pressure end 801, and an elastic connector 804 is connected to the inside of the top pressure end 801.

[0039] like Figure 4 As shown, the outer wall of the top pressure end 801 is provided with a groove 802 that is adapted to the gasket 803. The position of the gasket 803 is in contact with the oil filling groove 6. When the top pressure end 801 moves to be in contact with the oil nozzle 5, the sealing performance of the plug is improved.

[0040] like Figure 4As shown, the inner side of the top pressure end 801 is slidably connected to a guide rod 806 which is fixedly connected to the elastic connector 804. The inner side of the top pressure end 801 is provided with a guide limiting groove 805 which is slidably connected to the guide rod 806. The guide rod 806 slides and adjusts inside the guide limiting groove 805. Then, the built-in elastic connector 804 will drive the top pressure end 801 to press down against the oil nozzle 5 to further improve the leak-proof performance of the oil nozzle 5.

[0041] like Figure 4 As shown, a threaded connector 807 is provided on one side of the guide rod 806, which is threaded to the valve stem 704. A rubber tube 808 is connected to one end of the outer side of the guide rod 806. The valve stem 704 and the guide rod 806 are fixedly connected by the threaded connector 807. A rubber tube 808 is provided at the connection for sealing. The removable connection is used to improve the efficiency of subsequent maintenance without the need for complete replacement.

[0042] The working principle of this utility model is as follows: When the injector is in use, the fuel injection groove 6 passes through the inner side of the valve body 4 and the nozzle 5, and is connected to the fuel inlet pipe 2. Fuel is then delivered through the end of the fuel injection groove 6, facilitating fuel injection through the end of the nozzle 5. At this time, the solenoid valve 701 controls the position of the valve stem 704 to adjust the opening and closing of the fuel injection. The buffer connector 702 improves the buffer protection during adjustment. The limit seat 703 slides inside the valve seat 1, and the valve stem 704 slides inside the valve body 4, further improving the stability of the valve stem 704 adjustment. When the valve stem 704 is adjusted, the outer elastic bellows 705 is limited and squeezed inside the valve body 4. The outer ring diameter of the rubber ring 706 is slightly larger than that of the elastic bellows 705. The internal metal support ring 707 improves the rigidity of the rubber ring 706 adjustment, ensuring... The elastic bellows 705, after compression, can be pressed against the side wall to improve the sealing performance of the valve stem 704 during sliding adjustment. Then, the inner side of the nozzle 5 is sealed by the movement of the top pressure end 801. At this time, the position of the gasket 803 is in contact with the oil filling groove 6. When the top pressure end 801 moves to contact the nozzle 5, the sealing performance is improved. The guide rod 806 slides and adjusts inside the guide limit groove 805. Then, the built-in elastic connector 804 will drive the top pressure end 801 to press down against the nozzle 5, further improving the leak-proof performance of the nozzle 5 and ensuring the safety of the injector during use. The valve stem 704 and the guide rod 806 are fixedly connected by the threaded joint 807. A rubber tube 808 is set at the connection for sealing. The removable connection improves the efficiency of subsequent maintenance, eliminating the need for overall replacement and reducing maintenance costs.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A leak-proof component for an electronic valve, characterized in that: include: Valve seat (1), with an oil inlet pipe (2) fixedly connected to one side of the valve seat (1), an oil return pipe (3) fixedly installed at one end of the valve seat (1), and a valve body (4) fixedly connected to one side of the valve seat (1). A sealing adjustment assembly (7) is connected to the inner side of the valve body (4), and the sealing adjustment assembly (7) includes: A solenoid valve (701) is fixedly connected to the inside of the valve seat (1). A valve stem (704) is connected to one side of the solenoid valve (701), and an elastic bellows (705) is connected to the outside of the valve stem (704). One end of the valve stem (704) is connected to a pressure sealing assembly (8), which includes: A top pressure end (801) is slidably connected to the outside of the valve stem (704). A washer (803) is connected to the outside of the top pressure end (801), and an elastic connector (804) is connected to the inside of the top pressure end (801).

2. The leak-proof component of an electronic valve according to claim 1, characterized in that: One end of the valve body (4) is fixedly connected to an oil nozzle (5), and an oil filling groove (6) is provided on the inner side of the oil nozzle (5).

3. The leak-proof assembly for an electronic valve according to claim 1, characterized in that: A buffer connector (702) is fixedly connected to one side of the solenoid valve (701), and a limit seat (703) that is slidably connected to the valve seat (1) is fixedly connected to one side of the buffer connector (702).

4. The leak-proof assembly for an electronic valve according to claim 3, characterized in that: The valve stem (704) is fixedly connected to one side of the limiting seat (703), and the valve stem (704) is slidably connected to the valve body (4).

5. The leak-proof assembly for an electronic valve according to claim 1, characterized in that: A rubber ring (706) is connected to the outside of the elastic bellows (705), and a support ring (707) is filled inside the rubber ring (706).

6. The leak-proof assembly for an electronic valve according to claim 1, characterized in that: The outer wall of the top pressing end (801) is provided with a groove (802) that is adapted to the washer (803).

7. The leak-proof assembly for an electronic valve according to claim 1, characterized in that: The inner side of the top pressing end (801) is slidably connected to a guide rod (806) which is fixedly connected to the elastic connector (804), and the inner side of the top pressing end (801) is provided with a guide limiting groove (805) which is slidably connected to the guide rod (806).

8. The leak-proof assembly for an electronic valve according to claim 7, characterized in that: A threaded connector (807) for threaded connection with valve stem (704) is provided on one side of the guide rod (806), and a rubber tube (808) is connected to one outer end of the guide rod (806).

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