High-sealing split type oil nozzle
By designing the removable filter assembly and multiple sealing design in the fuel injector, the replacement difficulties and impurities residues caused by the internal setting of the filter are solved, and the efficient cleaning and high sealing of the fuel injector are achieved, reducing the difficulty of repairs and cost.
Patent Information
- Application Number
- CN202421280172.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-06-05
AI Technical Summary
The filter in the existing fuel injector is arranged inside, which makes it difficult to replace and easily retain impurities, affecting the performance of the fuel injector.
A high-seal split fuel injector is designed with a removable filter assembly and multiple sealing design, including threaded connection between the filter storage chamber and the fuel injector housing, using a fluoroelastic seal plug and solenoid coil control needle The valve is opened to ensure fuel purity and sealing.
Simplifies filter replacement and cleaning maintenance, reduces maintenance costs, improves the sealing and use safety of fuel injectors, and ensures stable operation in high-pressure and high-temperature environments.
Smart Images
Figure CN222296403U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fuel injection nozzles, in particular to a high-sealing split fuel injection nozzle. Background Art
[0002] The fuel injector is an important part of machinery and equipment. It guarantees the normal operation of various machinery and equipment by precisely controlling the injection of fuel, coolant or lubricating oil. In the automotive field, the performance of the fuel injector directly affects the power, economy and emissions of the engine, so there are extremely high requirements for its design and manufacturing. Its working principle is based on the control of the solenoid valve. When the solenoid coil is energized, suction is generated to lift the needle valve, thereby opening the spray hole. The fuel is sprayed out at high speed through the annular gap between the needle pin at the head of the needle valve and the spray hole, forming a mist to facilitate combustion.
[0003] A Chinese utility model (announcement number: CN209244712U) discloses an engine fuel injector device, wherein the filter is arranged at the top of the fuel injector and is embedded in the fuel injector, the sealing ring is arranged in a circular shape on the filter, and the center of the sealing ring is sleeved with the outside of the filter, the tops of the left and right sides of the fuel injector are embedded in the metal eyelets, and the bottom end of the filter is bolted to the regulator. A sleeve nozzle is arranged at the bottom of the fuel injector, and a plurality of fine nozzles are arranged in the sleeve nozzle, so that when the fuel is sprayed through pressure impact, the fuel is atomized through the plurality of fine nozzles, thereby achieving the beneficial effects of atomizing the fuel, increasing the spraying range of the fuel, and reducing the fuel consumption.
[0004] It is found that there are at least the following problems in this technology. In the above patent, the filter is arranged at the top of the inside of the fuel injector and is embedded in the fuel injector. In actual use, since the filter is arranged inside the fuel injector, it is more troublesome to replace it, and impurities are easily left on the wall of the filter storage cavity. If the cleaning process is not careful, it is easy to get the impurities into the fuel injector, causing wear of the fuel injector parts, jamming of the needle valve, etc., which seriously affects the performance of the fuel injector. Therefore, a high-seal split fuel injector is now proposed. Utility Model Content
[0005] In order to improve the problem that the filter is arranged inside the fuel injector, which is troublesome to replace, and impurities are easily left on the wall of the filter storage chamber, and the impurities can easily be put into the fuel injector nozzle if the cleaning process is not careful, causing the wear of the fuel injector parts, the needle valve getting stuck, etc., which seriously affects the performance of the fuel injector, the utility model provides a high-sealing split fuel injector.
[0006] The utility model provides a high-seal split fuel injector nozzle, which adopts the following technical solutions:
[0007] A high-seal split fuel injector comprises a fuel injector housing, a filter screen removal assembly located at the top of the fuel injector housing, and a high-seal assembly located inside the fuel injector housing;
[0008] The filter disassembly assembly includes a filter storage chamber, which is threadedly connected to the injector housing through a second threaded mounting block and a second threaded mounting hole. A first threaded mounting hole is provided inside the top of the filter storage chamber. A filter body is threadedly connected to the top of the filter storage chamber through the first threaded mounting block, and a sealing plate is fixedly connected to the top of the filter body.
[0009] By adopting the above technical solution and setting up the filter disassembly assembly, users can easily disassemble and replace the filter body, which greatly simplifies the cleaning, maintenance and replacement of the injector. Replacing the filter helps to maintain the cleanliness and filtering effect of the injector and ensure the purity and combustion efficiency of the fuel.
[0010] Optionally, an oil inlet hole is provided inside the sealing plate, an oil return passage is provided inside the fuel injector housing, and a spring is provided below the oil return passage.
[0011] By adopting the above technical solution, when the electromagnetic coil is energized, a magnetic field will be generated to attract the armature, and the armature will drive the needle valve to move upward, so that the fuel injector nozzle opens. At this time, the fuel is filtered through the filter body, enters the fuel injector nozzle from the oil inlet hole, and is sprayed out through the fuel injector nozzle.
[0012] Optionally, an armature is provided below the spring, and a needle valve is provided below the armature.
[0013] By adopting the above technical solution, when the electromagnetic coil is powered off, the armature and the needle valve are reset under the action of the spring, the fuel injection nozzle is closed, and the excess fuel flows back to the fuel tank through the oil return channel.
[0014] Optionally, electromagnetic coils are provided on both the left and right sides of the fuel injector housing, and a plug connector is connected to one side of the outside of the fuel injector housing.
[0015] By adopting the above technical solution, the fuel injector uses an electromagnetic coil to control the opening and closing of the needle valve. This control method can achieve precise control of the injection amount and injection time.
[0016] Optionally, the high-sealing component includes a first sealing ring, which is located at the connection between the sealing plate and the first threaded mounting block, a second sealing ring is provided at the connection between the second threaded mounting block and the filter storage chamber, and a third sealing ring is bonded to the bottom of the second threaded mounting block.
[0017] By adopting the above technical solution and a multiple sealing design, a tight connection between the various components of the fuel injector is ensured.
[0018] Optionally, a lower housing is threadedly connected to the bottom of the fuel injector housing, and a fourth sealing ring is provided at the connection between the lower housing and the fuel injector housing.
[0019] By adopting the above technical solution, the arrangement effectively ensures the sealing between the inside and outside of the fuel injector housing, avoids the problem of fuel leakage, and improves the safety of the fuel injector.
[0020] Optionally, a sealing plug is installed at the bottom of the needle valve, and the sealing plug is made of fluororubber.
[0021] By adopting the above technical solution, the fluororubber sealing plug has good high temperature resistance, corrosion resistance and sealing performance, ensuring the stable operation of the fuel injector under high pressure and high temperature environment.
[0022] In summary, the utility model has the following beneficial effects:
[0023] 1. The utility model provides a filter disassembly assembly so that the user can easily disassemble and replace the filter body, which greatly simplifies the cleaning, maintenance and replacement of the fuel injector. Replacing the filter helps to keep the fuel injector clean and filter effect, ensure the purity and combustion efficiency of the fuel, and the detachable arrangement between the filter storage chamber and the fuel injector housing improves the problem that the filter is arranged inside the fuel injector, which is more troublesome to replace, and impurities are easily left on the wall of the filter storage chamber. If the cleaning process is not careful, it is easy to get impurities into the fuel injector, causing wear of the fuel injector parts, stuck needle valves, etc., which seriously affect the performance of the fuel injector.
[0024] 2. The utility model sets up a high-sealing component, wherein the first sealing ring, the second sealing ring, the third sealing ring and the fourth sealing ring adopt a multiple sealing design to ensure the close connection between the various components of the fuel injector, effectively ensure the sealing between the inside and outside of the fuel injector housing, avoid the problem of fuel leakage, and improve the safety of the fuel injector. At the same time, the fluororubber sealing plug has good high temperature resistance, corrosion resistance and sealing performance, ensuring the stable operation of the fuel injector under high pressure and high temperature environment.
[0025] 3. The fuel injector of the utility model adopts a split structural design, so that each component can be disassembled and replaced separately, reducing the maintenance cost and difficulty. When a component fails or is damaged, the user can easily disassemble it for replacement or repair without replacing the entire fuel injector. At the same time, it also makes the cleaning and maintenance of the fuel injector more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0027] Figure 2 It is a schematic diagram of the structure inside the fuel injection nozzle shell of the utility model.
[0028] Figure 3 It is a structural schematic diagram of a filter screen disassembly component of the utility model.
[0029] Figure 4 This utility model Figure 2 Schematic diagram of the structure with a partial enlargement at point A in the middle.
[0030] Description of reference numerals:
[0031] 1. Injector housing; 2. Lower housing; 3. Oil inlet hole; 4. Filter disassembly assembly; 401. First threaded mounting block; 402. Filter body; 403. First threaded mounting hole; 404. Second threaded mounting block; 405. Second threaded mounting hole; 406. Filter storage chamber; 407. Sealing plate; 5. High sealing assembly; 501. First sealing ring; 502. Second sealing ring; 503. Third sealing ring; 504. Fourth sealing ring; 505. Sealing plug; 6. Plug connector; 7. Needle valve; 8. Armature; 9. Solenoid coil; 10. Spring; 11. Oil return channel. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-Figure 4 This application is described in further detail.
[0033] Please refer to Figure 1-Figure 4 A high-seal split fuel injector comprises a fuel injector housing 1, a filter screen disassembly assembly 4 located on the top of the fuel injector housing 1 and a high-seal assembly 5 located inside the fuel injector housing 1; an oil return passage 11 is provided inside the fuel injector housing 1, a spring 10 is provided below the oil return passage 11, an armature 8 is provided below the spring 10, a needle valve 7 is provided below the armature 8, an electromagnetic coil 9 is provided on both sides of the inside of the fuel injector housing 1, and a plug connector 6 is connected to one side of the outside of the fuel injector housing 1; the fuel injector adopts a split structural design, so that each component can be disassembled and replaced separately, reducing the maintenance cost and difficulty, and when a component fails or is damaged, the user can easily disassemble it for replacement or repair without replacing the entire fuel injector, and at the same time, it makes the cleaning and maintenance of the fuel injector more convenient and efficient.
[0034] Reference Figure 2 and Figure 3The filter disassembly assembly 4 includes a filter storage chamber 406, which is threadedly connected to the fuel injector housing 1 through a second threaded mounting block 404 and a second threaded mounting hole 405. A first threaded mounting hole 403 is provided inside the top of the filter storage chamber 406. A filter body 402 is threadedly connected to the top of the filter storage chamber 406 through a first threaded mounting block 401. A sealing plate 407 is fixedly connected to the top of the filter body 402. An oil inlet hole 3 is provided inside the sealing plate 407. The filter disassembly assembly 4 is provided so that the user can easily remove the filter. The filter body 402 can be easily disassembled and replaced, which greatly simplifies the cleaning, maintenance and replacement of the injector. Replacing the filter helps to keep the injector clean and filter effectively, ensuring the purity and combustion efficiency of the fuel. The detachable arrangement between the filter storage chamber 406 and the injector housing 1 improves the problem that the filter is arranged inside the injector, which is troublesome to replace. Impurities are easily left on the wall of the filter storage chamber. If the cleaning process is not careful, impurities can be easily introduced into the injector, causing wear of the injector parts, stuck needle valves and other problems, which seriously affect the performance of the injector.
[0035] Reference Figure 3 and Figure 4 The high sealing assembly 5 includes a first sealing ring 501, which is located at the connection between the sealing plate 407 and the first threaded mounting block 401, a second sealing ring 502 is provided at the connection between the second threaded mounting block 404 and the filter storage chamber 406, a third sealing ring 503 is bonded to the bottom of the second threaded mounting block 404, the bottom of the fuel injector housing 1 is threadedly connected with the lower housing 2, and a fourth sealing ring 504 is provided at the connection between the lower housing 2 and the fuel injector housing 1, and a sealing plug 505 is installed at the bottom of the needle valve 7, and the material of the sealing plug 505 is Material of fluororubber; through the high sealing component 5, the first sealing ring 501, the second sealing ring 502, the third sealing ring 503 and the fourth sealing ring 504, adopt a multiple sealing design to ensure the close connection between the various components of the fuel injector, effectively ensure the sealing between the inside and outside of the fuel injector housing 1, avoid the problem of fuel leakage, and improve the safety of the fuel injector. At the same time, the fluororubber sealing plug 505 has good high temperature resistance, corrosion resistance and sealing performance, ensuring the stable operation of the fuel injector under high pressure and high temperature environment.
[0036] The implementation principle of the utility model is as follows: when using the high-seal split fuel injector, first, the filter body 402 is threadedly connected to the first threaded mounting hole 403 at the top of the filter storage chamber 406 through the first threaded mounting block 401, ensuring that the filter body 402 is firmly installed and the filter surface is not damaged. Next, the filter storage chamber 406 with the filter installed is threadedly connected to the fuel injector housing 1 through the second threaded mounting block 404 and the second threaded mounting hole 405, ensuring that the connection is tight and leak-free. Finally, the lower housing 2 is threadedly connected to the bottom of the fuel injector housing 1 to ensure that the connection between the two is tight.
[0037] When the electromagnetic coil 9 is energized, a magnetic field is generated to attract the armature 8, and the armature 8 drives the needle valve 7 to move upward, so that the fuel injector nozzle is opened. At this time, the fuel is filtered through the filter body 402, enters the fuel injector nozzle from the oil inlet hole 3, and is sprayed out through the fuel injector nozzle; when the electromagnetic coil 9 is de-energized, the armature 8 and the needle valve 7 are reset under the action of the spring 10, the fuel injector nozzle is closed, and the excess fuel flows back to the fuel tank through the oil return channel 11; the filter disassembly assembly 4 is set, so that the user can easily disassemble and replace the filter body 402, which greatly The cleaning, maintenance and replacement of the fuel injector are simplified. Replacing the filter helps to keep the fuel injector clean and filter effectively, ensuring the purity and combustion efficiency of the fuel. The detachable arrangement between the filter storage chamber 406 and the fuel injector housing 1 improves the problem that the filter is arranged inside the fuel injector, which is troublesome to replace. Impurities are easily left on the wall of the filter storage chamber. If the cleaning process is not careful, the impurities can be easily put into the fuel injector, causing the wear of the fuel injector parts, the stuck needle valve and other phenomena, which seriously affect the performance of the fuel injector.
[0038] By setting up a high sealing component 5, wherein the first sealing ring 501, the second sealing ring 502, the third sealing ring 503 and the fourth sealing ring 504, adopt a multiple sealing design, thereby ensuring the close connection between the various components of the fuel injector, effectively ensuring the sealing between the inside and the outside of the fuel injector housing 1, avoiding the problem of fuel leakage, and improving the safety of the use of the fuel injector. At the same time, the fluororubber sealing plug 505 has good high temperature resistance, corrosion resistance and sealing performance, thereby ensuring the stable operation of the fuel injector under high pressure and high temperature environment; and the fuel injector adopts a split structural design, so that each component can be disassembled and replaced separately, reducing the maintenance cost and difficulty. When a component fails or is damaged, the user can easily disassemble it for replacement or repair without replacing the entire fuel injector, and at the same time, it makes the cleaning and maintenance of the fuel injector more convenient and efficient.
[0039] The above are all preferred embodiments of the present utility model, and are not intended to limit the protection scope of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the protection scope of the present utility model.
Claims
1. A high-seal split fuel injector, characterized in that: It comprises a fuel injector housing (1), a filter screen removal assembly (4) located at the top of the fuel injector housing (1), and a high sealing assembly (5) located inside the fuel injector housing (1); The filter screen disassembly assembly (4) comprises a filter storage chamber (406), the filter storage chamber (406) being threadedly connected to the fuel injector housing (1) via a second threaded mounting block (404) and a second threaded mounting hole (405), a first threaded mounting hole (403) being provided inside the top of the filter storage chamber (406), a filter screen body (402) being threadedly connected above the filter storage chamber (406) via a first threaded mounting block (401), and a sealing plate (407) being fixedly connected to the top of the filter screen body (402).
2. A high-seal split fuel injector according to claim 1, characterized in that: An oil inlet hole (3) is provided inside the sealing plate (407), an oil return passage (11) is provided inside the fuel injection nozzle housing (1), and a spring (10) is provided below the oil return passage (11).
3. A high-seal split fuel injector according to claim 2, characterized in that: An armature (8) is arranged below the spring (10), and a needle valve (7) is arranged below the armature (8).
4. The high-seal split fuel injector according to claim 1, characterized in that: Electromagnetic coils (9) are provided on both the left and right sides of the interior of the fuel injector housing (1), and a plug connector (6) is connected to one side of the exterior of the fuel injector housing (1).
5. The high-seal split fuel injector according to claim 1, characterized in that: The high-seal assembly (5) comprises a first sealing ring (501), the first sealing ring (501) being located at the connection between the sealing plate (407) and the first threaded mounting block (401), a second sealing ring (502) being provided at the connection between the second threaded mounting block (404) and the filter storage chamber (406), and a third sealing ring (503) being bonded to the bottom of the second threaded mounting block (404).
6. The high-seal split fuel injector according to claim 1, characterized in that: The bottom of the fuel injection nozzle housing (1) is threadedly connected to a lower housing (2), and a fourth sealing ring (504) is provided at the connection between the lower housing (2) and the fuel injection nozzle housing (1).
7. The high-seal split fuel injector according to claim 3, characterized in that: A sealing plug (505) is installed at the bottom of the needle valve (7), and the sealing plug (505) is made of fluororubber.