Flange base of oil nozzle

Abstract

The utility model discloses an oil nozzle flange base, which is applied to the field of engine structures and comprises a first flange base, a second flange base and a third flange base, and sealing mechanisms are arranged between the first flange base and the second flange base and between the second flange base and the third flange base. Air inlet branch pipes are arranged on the first flange base, the second flange base and the third flange base, oil nozzles are arranged on the air inlet branch pipes, the sealing ring is fixed between the adjacent flange bases in the using process through the arrangement of the sealing mechanism, then gas is injected into the sealing ring through the air inlet pipe, the sealing ring is made to expand, and the oil nozzles are arranged on the oil nozzles. After the sealing rings are expanded, the air inlet pipe is sealed through the sealing plugs, and the situation that the sealing rings leak air is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of engine structures, and particularly relates to a fuel injection nozzle flange base. Background Art

[0002] In the fields of trucks, buses and construction machinery, the engine is the core power component, and its performance and reliability directly affect the operating efficiency and service life of the entire vehicle. The fuel injector is an important component of the engine fuel supply system. Its precise fuel injection plays a vital role in the engine's power output, fuel economy and emission performance. The fuel injector flange base is the connecting component between the fuel injector and the engine intake system. The rationality of its design is directly related to the installation stability, sealing effect and overall durability of the fuel injector.

[0003] The Chinese utility model patent currently announced is: CN219472227U, which discloses an engine intake manifold fuel injector flange base, which is provided with a first flange base, an intake manifold is fixedly installed on the upper surface of the second gasket, and a fuel injector is inserted on the lower surface of the intake manifold. A gasket is movably sleeved on the outer surface of the fuel injector, and the first gasket is movably fitted with the upper surface of the first flange base, and the size of the first gasket matches the size of the first flange base. A plurality of threaded holes are opened on the upper surface of the first flange base, and the threaded holes are in a circumferential array, so that the first flange base and the first gasket can be relatively fixed through the threaded holes, thereby achieving the purpose of effectively reducing the wear and tear on the outer surface of the first flange base and disassembly and replacement.

[0004] When in use, this patent only uses a gasket for sealing, but gaps or holes are prone to appear on the contact surface between the gasket and the flange base, resulting in poor sealing effect. Utility Model Content

[0005] The purpose of the utility model is to provide a fuel injector flange base, which solves the problem that the existing engine intake manifold fuel injector flange base is only sealed by a gasket, but gaps or holes are easily formed on the contact surface between the gasket and the flange base, resulting in poor sealing effect.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a fuel injector flange base, comprising a first flange base, a second flange base, and a third flange base, wherein a sealing mechanism is provided between the first flange base and the second flange base, and between the second flange base and the third flange base, and an intake branch pipe is provided on the first flange base, the second flange base, and the third flange base, and a fuel injector is provided on the intake branch pipe;

[0007] The sealing mechanism includes a sealing ring, a groove, an air intake pipe and a sealing plug. The sealing ring is arranged between the first flange base and the second flange base, the second flange base and the third flange base. The sealing ring is hollow. The groove is arranged on the first flange base and the second flange base, the second flange base and the third flange base. The air intake pipe is arranged on the sealing ring, and the sealing plug is arranged on the air intake pipe.

[0008] The above technical solution is adopted, by setting a first flange base, a second flange base, a third flange base, a sealing mechanism, an intake branch pipe and a fuel injector. When in use, the three layers of flange bases are stacked and fastened together to form a stable support structure. A sealing mechanism is provided between each layer to ensure the airtightness of the entire system. When the engine is running, external air enters the engine through the intake branch pipe. At the same time, the ECU controls the operation of the fuel injector according to the engine operating conditions, and sprays the fuel into the intake branch pipe in a mist form to mix with the air. The sealing mechanism includes a sealing ring, a groove, an intake pipe and a sealing plug. When in use, the sealing ring is fixed between adjacent flange bases, and then gas is injected into the sealing ring through the intake pipe to expand the sealing ring and fill the gap between the adjacent flange bases. Then part of the sealing ring can be squeezed into the groove, further improving the sealing effect of the sealing ring. After the sealing ring has expanded, the intake pipe is sealed by the sealing plug to avoid leakage of the sealing ring.

[0009] Further: fixing holes are provided on the first flange base, the second flange base and the third flange base, the number of the fixing holes is several and they are arranged circumferentially, a fixing block is provided in the fixing hole on the third flange base, a threaded rod is provided in the fixing hole, the threaded rod is threadedly connected to the fixing block, and a locking nut is threadedly connected to the threaded rod.

[0010] By adopting the above technical solution, by setting a fixing hole, a fixing block, a threaded rod and a locking nut, when in use, the fixing block is first fixed in the fixing hole on the third flange base, and then the threaded rod passes through the fixing hole and is threadedly connected to the fixing block, the threaded rod is fixed in the fixing hole, and then the locking nut is rotated to make the locking nut drive the second flange base and the first flange base closer to the third flange base, thereby stacking and fastening the three-layer flange base together.

[0011] Furthermore: a variable diameter sealing ring is provided at the connection between the fuel injector and the intake branch pipe, and the variable diameter sealing ring is made of elastic material.

[0012] By adopting the above technical solution and setting a variable diameter sealing ring, the sealing effect can be automatically adjusted according to the slight displacement or temperature change of the injector nozzle, ensuring long-term stable sealing.

[0013] Furthermore: anti-slip grooves are provided on the side walls of the sealing plug, and the number of the anti-slip grooves is several and they are arranged circumferentially.

[0014] By adopting the above technical solution, by providing the anti-skid groove, the anti-skid groove can increase the friction of the sealing plug during use, thereby preventing the sealing plug from falling when the staff takes the sealing plug.

[0015] Furthermore: a fixing cover is provided at the upper end of the threaded rod, the fixing cover is threadedly rotatably connected to the threaded rod, and the fixing cover is located in the fixing hole.

[0016] By adopting the above technical solution and providing a fixing cover, the fixing cover can fix the threaded rod passing through the fixing block during use, thereby further enhancing the fixing effect of the threaded rod.

[0017] Furthermore: a pressure sensor is provided inside the sealing ring.

[0018] By adopting the above technical solution, a pressure sensor is set up. When in use, the pressure sensor can monitor the pressure inside the sealing ring. When a leak occurs in the sealing ring, the air pressure inside the sealing ring will decrease, which can remind the staff to replace the sealing ring in time.

[0019] Furthermore: the sizes of the first flange base, the second flange base and the third flange base match each other.

[0020] By adopting the above technical solution, by setting the dimensions of the first flange base, the second flange base and the third flange base, the dimensions of the first flange base, the second flange base and the third flange base are precisely designed and processed to ensure that they can fit tightly and be stacked layer by layer. This size matching enables the flange bases of each layer to be accurately aligned during installation, reducing assembly errors.

[0021] Furthermore: the outer wall of the sealing ring matches the outer walls of the first flange base, the second flange base and the third flange base.

[0022] By adopting the above technical solution, by setting the size of the sealing ring, the outer wall of the sealing ring is designed to closely match the outer walls of the first flange base, the second flange base and the third flange base, and can be accurately placed in the groove between the two adjacent flange bases to form an effective sealing interface.

[0023] In summary, the present invention has the following beneficial effects:

[0024] By setting up a sealing mechanism, when in use, the sealing ring is fixed between adjacent flange bases, and then gas is injected into the sealing ring through the air inlet pipe to make the sealing ring expand and fill the gap between the adjacent flange bases. Then part of the sealing ring can be squeezed into the groove, further improving the sealing effect of the sealing ring. After the sealing ring has completed expansion, the air inlet pipe is sealed by the sealing plug to avoid air leakage of the sealing ring.

[0025] By setting the fixing hole, the fixing block, the threaded rod and the locking nut, when in use, the fixing block is first fixed in the fixing hole on the third flange base, and then the threaded rod passes through the fixing hole and is connected to the fixing block thread rotationally, the threaded rod is fixed in the fixing hole, and then the locking nut is rotated to make the locking nut drive the second flange base and the first flange base closer to the third flange base, thereby stacking and fastening the three-layer flange base together.

[0026] Based on the above improvements, the overall technical effect achieved by the device is that the sealing gasket can be inflated so that the sealing gasket fills the gaps between the flange chassis layers, thereby achieving a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0028] Figure 2 This is a structural diagram of the intake manifold, fuel injection nozzle and variable diameter sealing ring of the utility model;

[0029] Figure 3 This utility model Figure 2 Stereoscopic cross-section at AA in the middle;

[0030] Figure 4 It is a structural schematic diagram of the fixing hole, fixing block and threaded rod of the utility model;

[0031] Figure 5 This utility model Figure 3 Enlarged view of point A in the middle.

[0032] In the figure, 1. first flange base; 2. second flange base; 3. third flange base; 4. sealing mechanism; 5. intake manifold; 6. fuel injector; 7. fixing hole; 8. fixing block; 9. threaded rod; 10. locking nut; 11. variable diameter sealing ring; 12. anti-slip groove; 13. fixing cover; 14. pressure sensor; 401. sealing ring; 402. groove; 403. intake pipe; 404. sealing plug. DETAILED DESCRIPTION

[0033] The present invention will be described in further detail below with reference to the accompanying drawings.

[0034] Example:

[0035] See also Figure 1-Figure 5 The utility model provides a technical solution: a fuel injector flange base, comprising a first flange base 1, a second flange base 2 and a third flange base 3, a sealing mechanism 4 is provided between the first flange base 1 and the second flange base 2, and between the second flange base 2 and the third flange base 3, an intake branch pipe 5 is provided on the first flange base 1, the second flange base 2 and the third flange base 3, and a fuel injector 6 is provided on the intake branch pipe 5;

[0036] The sealing mechanism 4 includes a sealing ring 401, a groove 402, an air inlet pipe 403 and a sealing plug 404. The sealing ring 401 is arranged between the first flange base 1 and the second flange base 2, the second flange base 2 and the third flange base 3. The sealing ring 401 is hollow, the groove 402 is arranged on the first flange base 1 and the second flange base 2, the second flange base 2 and the third flange base 3, the air inlet pipe 403 is arranged on the sealing ring 401, and the sealing plug 404 is arranged on the air inlet pipe 403.

[0037] By providing a first flange base 1, a second flange base 2, a third flange base 3, a sealing mechanism 4, an intake manifold 5, and a fuel injector 6, when in use, the three layers of flange bases are stacked and fastened together to form a stable support structure. A sealing mechanism 4 is provided between each layer to ensure the airtightness of the entire system. When the engine is running, external air enters the engine through the intake manifold 5. At the same time, the ECU controls the operation of the fuel injector 6 according to the engine operating conditions, spraying fuel into the intake manifold 5 in the form of a mist to mix with the air.

[0038] During use, the sealing ring 401 is fixed between adjacent flange bases, and then gas is injected into the sealing ring 401 through the air inlet pipe 403 to expand the sealing ring 401 and fill the gap between the adjacent flange bases. Then part of the sealing ring 401 can be squeezed into the groove 402, further improving the sealing effect of the sealing ring 401. After the sealing ring 401 has completed its expansion, the air inlet pipe 403 is sealed by the sealing plug 404 to prevent the sealing ring 401 from leaking.

[0039] refer to Figure 4 The first flange base 1, the second flange base 2 and the third flange base 3 are provided with fixing holes 7. The number of fixing holes 7 is several and they are arranged circumferentially. A fixing block 8 is provided in the fixing hole 7 on the third flange base 3. A threaded rod 9 is provided in the fixing hole 7. The threaded rod 9 is threadedly connected to the fixing block 8, and a locking nut 10 is threadedly connected to the threaded rod 9.

[0040] By setting the fixing hole 7, the fixing block 8, the threaded rod 9 and the locking nut 10, when in use, the fixing block 8 is first fixed in the fixing hole 7 on the third flange base 3, and then the threaded rod 9 passes through the fixing hole 7 and is threadedly connected to the fixing block 8, and the threaded rod 9 is fixed in the fixing hole 7, and then the locking nut 10 is rotated so that the locking nut 10 drives the second flange base 2 and the first flange base 1 to approach the third flange base 3, thereby stacking and fastening the three-layer flange base together.

[0041] refer to Figure 3 A variable diameter sealing ring 11 is provided at the connection between the fuel injector 6 and the intake branch pipe 5. The variable diameter sealing ring 11 is made of elastic material. By providing the variable diameter sealing ring 11, the sealing effect can be automatically adjusted according to the slight displacement or temperature change of the fuel injector 6, thereby ensuring long-term stable sealing.

[0042] refer to Figure 5 Anti-slip grooves 12 are provided on the side walls of the sealing plug 404. There are several anti-slip grooves 12 and they are arranged circumferentially. By setting the anti-slip grooves 12, the anti-slip grooves 12 can increase the friction of the sealing plug 404 during use, thereby preventing the sealing plug 404 from falling when the staff takes the sealing plug 404.

[0043] refer to Figure 4 A fixing cover 13 is provided at the upper end of the threaded rod 9. The fixing cover 13 is threadably connected to the threaded rod 9. The fixing cover 13 is located in the fixing hole 7. By setting the fixing cover 13, when in use, the fixing cover 13 can fix the threaded rod 9 passing through the fixing block 8, further increasing the fixing effect of the threaded rod 9.

[0044] refer to Figure 5 A pressure sensor 14 is provided inside the sealing ring 401. By providing the pressure sensor 14, the pressure sensor 14 can monitor the pressure inside the sealing ring 401 during use. When a leak occurs in the sealing ring 401, the air pressure inside the sealing ring 401 will decrease, which can remind the staff to replace the sealing ring 401 in time.

[0045] refer to Figure 3 The sizes of the first flange base 1, the second flange base 2 and the third flange base 3 are matched. By setting the sizes of the first flange base 1, the second flange base 2 and the third flange base 3, the sizes of the first flange base 1, the second flange base 2 and the third flange base 3 are precisely designed and processed to ensure that they can fit tightly and be stacked layer by layer. This size matching enables the flange bases of each layer to be accurately aligned during installation, reducing assembly errors.

[0046] refer to Figure 3The outer wall of the sealing ring 401 matches the outer walls of the first flange base 1, the second flange base 2 and the third flange base 3. By setting the size of the sealing ring 401, the outer wall of the sealing ring 401 is designed to closely match the outer walls of the first flange base 1, the second flange base 2 and the third flange base 3, and can be accurately placed in the groove 402 between the two adjacent flange bases to form an effective sealing interface.

[0047] Brief description of the usage process:

[0048] When in use, first, the fixing block 8 is fixed in the fixing hole 7 on the third flange base 3, and then the threaded rod 9 passes through the fixing hole 7 and is threadedly connected to the fixing block 8. The threaded rod 9 is fixed in the fixing hole 7, and then the locking nut 10 is rotated so that the locking nut 10 drives the second flange base 2 and the first flange base 1 to move closer to the third flange base 3, thereby stacking and fastening the three flange bases together;

[0049] Then, the sealing ring 401 is fixed between the adjacent flange bases, and then gas is injected into the sealing ring 401 through the air inlet pipe 403 to expand the sealing ring 401 and fill the gap between the adjacent flange bases. Then, part of the sealing ring 401 can be squeezed into the groove 402, further improving the sealing effect of the sealing ring 401. After the sealing ring 401 is expanded, the air inlet pipe 403 is sealed by the sealing plug 404 to prevent the sealing ring 401 from leaking. The pressure sensor 14 can monitor the pressure inside the sealing ring 401. When a leak occurs in the sealing ring 401, the air pressure inside the sealing ring 401 can be reduced, which can remind the staff to replace the sealing ring 401 in time.

[0050] Finally, the sealing effect can be automatically adjusted according to the slight displacement or temperature change of the injector 6 to ensure long-term stable sealing. The anti-slip groove 12 can increase the friction of the sealing plug 404 to prevent the sealing plug 404 from falling when the staff takes the sealing plug 404. The fixing cover 13 can fix the threaded rod 9 passing through the fixing block 8, further increasing the fixing effect of the threaded rod 9.

[0051] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A fuel injection nozzle flange base, comprising a first flange base (1), a second flange base (2) and a third flange base (3), characterized in that: A sealing mechanism (4) is provided between the first flange base (1) and the second flange base (2), and between the second flange base (2) and the third flange base (3); an intake branch pipe (5) is provided on the first flange base (1), the second flange base (2), and the third flange base (3); and a fuel injection nozzle (6) is provided on the intake branch pipe (5); The sealing mechanism (4) comprises a sealing ring (401), a groove (402), an air inlet pipe (403) and a sealing plug (404); the sealing ring (401) is arranged between the first flange base (1) and the second flange base (2), and between the second flange base (2) and the third flange base (3); the sealing ring (401) is hollow; the groove (402) is arranged on the first flange base (1) and the second flange base (2), and between the second flange base (2) and the third flange base (3); the air inlet pipe (403) is arranged on the sealing ring (401); and the sealing plug (404) is arranged on the air inlet pipe (403).

2. The fuel injector flange base according to claim 1, characterized in that: The first flange base (1), the second flange base (2) and the third flange base (3) are provided with fixing holes (7), the fixing holes (7) are in a plurality and are arranged circumferentially, a fixing block (8) is provided in the fixing hole (7) on the third flange base (3), a threaded rod (9) is provided in the fixing hole (7), the threaded rod (9) is threadedly connected to the fixing block (8), and a locking nut (10) is threadedly connected to the threaded rod (9).

3. The fuel injector flange base according to claim 1, characterized in that: A variable diameter sealing ring (11) is provided at the connection between the fuel injection nozzle (6) and the intake branch pipe (5), and the variable diameter sealing ring (11) is made of elastic material.

4. The fuel injector flange base according to claim 1, characterized in that: Anti-slip grooves (12) are provided on the side wall of the sealing plug (404), and the anti-slip grooves (12) are multiple in number and arranged circumferentially.

5. The fuel injector flange base according to claim 2, characterized in that: A fixing cover (13) is provided at the upper end of the threaded rod (9), the fixing cover (13) is threadedly connected to the threaded rod (9), and the fixing cover (13) is located in the fixing hole (7).

6. The fuel injector flange base according to claim 1, characterized in that: A pressure sensor (14) is provided inside the sealing ring (401).

7. The fuel injector flange base according to claim 1, characterized in that: The first flange base (1), the second flange base (2) and the third flange base (3) have matching sizes.

8. The fuel injector flange base according to claim 1, characterized in that: The outer wall of the sealing ring (401) matches the outer walls of the first flange base (1), the second flange base (2) and the third flange base (3).

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