High temperature resistant oil filler plug

Abstract

The utility model relates to oil filler cap technical field, and disclose a kind of high-temperature-resistant oil filler, comprising: oil filler installation pipe, oil filler outer layer cover and oil injection internal sealing plug, the inside of oil filler installation pipe is slidably connected with oil injection internal sealing plug, the top of oil filler installation pipe is threadedly connected with oil filler outer layer cover, the top surface of oil filler outer layer cover is equipped with air hole one;Clamping fixed installation component between oil filler installation pipe and oil injection internal sealing plug is set;Breather pressure relief component is set in the inside of oil injection internal sealing plug;Internal sealing component is set in the bottom of oil injection internal sealing plug, and the high-temperature-resistant oil filler is cooperated by clamping, breather pressure relief, internal sealing component, solves the problem of traditional oil filler high-temperature failure and maintenance, clamping component realizes quick installation and removal anti jam, breather component automatic pressure relief protection structure, sealing component keeps high-temperature sealing property and prevents oil leakage, adapts high-temperature working condition, prolongs the life of equipment lubricating system.

Description

Technical Field

[0001] This utility model relates to the field of oil filler plug technology, specifically a high-temperature resistant oil filler plug. Background Technology

[0002] In the field of mechanical manufacturing, oil filler plugs are the core sealing components of equipment lubrication systems. They are widely used in engines, heavy transmission equipment, industrial kilns, and other scenarios. Their main function is to seal the oil filling channel to prevent lubricating oil leakage. At the same time, they can be easily disassembled during regular equipment maintenance to replenish lubricating oil through the oil filling channel, ensuring the lubrication effect of moving parts such as bearings and gears, avoiding wear of parts due to insufficient lubrication, and extending the overall service life of the equipment. They are a basic component for maintaining stable equipment operation.

[0003] However, traditional oil filler plugs have significant technical shortcomings under high-temperature conditions. Currently, most mainstream oil filler plugs are made of ordinary carbon steel or stainless steel, paired with rubber or asbestos gaskets, which can only be used in medium and low temperature environments. When applied to high-temperature scenarios such as engine blocks and aerospace equipment transmission systems, the gaskets are prone to aging and carbonization, and the thermal expansion coefficient of the metal body is unstable, resulting in increased sealing gaps and frequent lubricating oil leakage. In addition, ordinary metals are prone to oxidation and corrosion at high temperatures, and the threaded structure is prone to rust and jamming, making disassembly difficult during maintenance and often requiring forceful disassembly, which damages components and increases downtime costs. This can no longer meet the high-temperature and high-reliability requirements of high-end equipment. Therefore, we have proposed a high-temperature resistant oil filler plug. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a high-temperature resistant oil injection plug, which solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] A high-temperature resistant oil filler plug, comprising:

[0007] The oil plug installation tube, the oil plug outer cap, and the oil filling inner sealing plug are provided. The oil plug installation tube is slidably connected to the inner side of the oil plug inner sealing plug. The top of the oil plug installation tube is threadedly connected to the oil plug outer cap. The top surface of the oil plug outer cap is provided with a vent hole. The vent hole is distributed in a ring at equal intervals on the top surface of the oil plug outer cap.

[0008] A snap-fit ​​fixing installation assembly is provided between the oil plug installation tube and the internal sealing plug for oil injection. The snap-fit ​​fixing installation assembly consists of a one-way vent valve and a mounting spring. The snap-fit ​​fixing installation assembly is used to snap-fit ​​and fix the oil plug installation tube and the internal sealing plug for oil injection.

[0009] A venting and pressure relief assembly is installed inside the sealing plug inside the oil filling chamber. The venting and pressure relief assembly consists of a one-way vent valve and a sealing vent plate. The venting and pressure relief assembly is used to provide pressure relief protection for the interior.

[0010] An internal sealing assembly is provided at the bottom of the oil filling internal sealing plug. The internal sealing assembly includes an interference seal ring, flexible graphite, and a copper frame. The internal sealing assembly is used to seal and protect the oil plug installation tube and the oil filling internal sealing plug.

[0011] Preferably, the top surface of the oil filling internal sealing plug is provided with a second vent hole, the inner side of the oil filling internal sealing plug is provided with a sliding mounting groove, the sliding mounting grooves are symmetrically distributed on the side of the oil filling internal sealing plug, the inner side of the sliding mounting groove is provided with a snap-fit ​​fixing mounting component, and the inner side of the second vent hole is provided with a venting and pressure relief component.

[0012] Preferably, the snap-fit ​​mounting assembly includes a snap-fit ​​slider and a snap-fit ​​spring. The snap-fit ​​spring is fixedly connected to the inner side of the sliding mounting groove, and the snap-fit ​​slider is fixedly connected to the other side of the snap-fit ​​spring. The snap-fit ​​slider is slidably connected to the inner side of the sliding mounting groove. A snap-fit ​​mounting groove is provided on the inner side of the oil plug mounting tube. The snap-fit ​​mounting grooves are symmetrically distributed on the inner side of the oil plug mounting tube, and the snap-fit ​​slider is slidably connected to the inner side of the snap-fit ​​mounting groove.

[0013] Preferably, the ventilated pressure relief assembly includes a one-way vent valve and a sealed vent plate. The sealed vent plate is fixedly connected to the bottom inner side of the second vent hole, and the one-way vent valve is fixedly connected to the inner side of the second vent hole. The top surface of the sealed vent plate is provided with micro vent holes, which are distributed in a ring at equal intervals on the top surface of the sealed vent plate.

[0014] Preferably, the outer side of the oil filling internal sealing plug is provided with a sealing installation groove, the inner side of the oil plug installation tube is provided with an inner groove, and an internal sealing component is provided inside the sealing installation groove and the inner groove.

[0015] Preferably, the internal sealing assembly includes an interference seal ring, flexible graphite, and a copper frame. The inner side of the sealing mounting groove is fixedly connected to the interference seal ring, the inner side of the inner groove is fixedly connected to the interference seal ring, the bottom surface of the oil filling internal sealing plug is fixedly connected to the copper frame, and the inner side of the copper frame is fixedly connected to the flexible graphite.

[0016] Preferably, the top outer side of the oil plug mounting tube is fixedly connected with an external thread, the top outer side of the oil plug mounting tube is threadedly connected with an outer oil plug cap, the top surface of the oil plug mounting tube is fixedly connected with an outer rubber sealing ring, the top surface of the outer rubber sealing ring is fixedly connected with an outer oil plug cap, and the top surface of the inner oil filling sealing plug is fixedly connected with an outer rubber sealing ring. The outer rubber sealing ring is used to seal the connection between the oil plug mounting tube and the inner oil filling sealing plug.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] A high-temperature resistant oil injection plug is provided, which has the following beneficial effects:

[0019] This high-temperature resistant oil plug effectively solves the problems of high-temperature failure and inconvenient installation and maintenance of traditional oil plugs through the coordinated design of the snap-fit ​​fixing assembly, the venting and pressure relief assembly, and the internal sealing assembly. In the snap-fit ​​fixing assembly, the installation fixing spring pushes the installation snap-fit ​​slider to engage with the snap-fit ​​installation groove, realizing the quick fixing and disassembly of the oil plug installation tube and the internal sealing plug, avoiding the problem of traditional thread corrosion and jamming. The venting and pressure relief assembly can automatically relieve pressure when the internal pressure rises due to high temperature through a one-way vent valve and the micro vent holes of the sealing vent plate, preventing the sealing structure from being damaged by excessive pressure. The internal sealing assembly adopts an interference-fit sealing ring with flexible graphite wrapped in a copper frame, which can maintain excellent sealing performance in high-temperature environments and prevent lubricating oil leakage. The outer rubber sealing ring further strengthens the top seal. The overall structure takes into account the high-temperature sealing reliability and the convenience of installation and maintenance, and is suitable for high-temperature conditions such as engines and industrial kilns, extending the service life of equipment lubrication systems. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram showing the overall structure of this utility model disassembled;

[0022] Figure 3 This is a cross-sectional view of the overall structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the overall structure of this utility model after being disassembled and cross-sectional.

[0024] In the diagram: 1. Oil plug mounting tube; 2. Oil plug outer cap; 3. Vent hole one; 4. Outer rubber sealing ring; 5. Mounting snap-fit ​​slider; 6. One-way vent valve; 7. Mounting fixing spring; 8. Sealing vent plate; 9. Oil filling internal sealing plug; 10. Vent hole two; 11. Sliding mounting groove; 12. Sealing mounting groove; 13. Interference sealing ring; 14. Flexible graphite; 15. Copper frame; 16. Miniature vent hole; 17. Snap-fit ​​mounting groove; 18. Inner groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A high-temperature resistant oil filler plug, comprising:

[0028] The oil plug installation tube 1, the oil plug outer cover 2, and the oil filling inner sealing plug 9 are slidably connected to the inner side of the oil plug installation tube 1. The top of the oil plug installation tube 1 is threadedly connected to the oil plug outer cover 2. The top surface of the oil plug outer cover 2 is provided with a vent hole 3, which is distributed in a ring at equal intervals on the top surface of the oil plug outer cover 2.

[0029] A snap-fit ​​mounting assembly is provided between the oil plug mounting tube 1 and the internal sealing plug 9. The snap-fit ​​mounting assembly consists of a one-way vent valve 6 and a mounting spring 7. The snap-fit ​​mounting assembly is used to securely mount the oil plug mounting tube 1 and the internal sealing plug 9.

[0030] A venting and pressure relief assembly is installed inside the sealing plug 9 inside the oil filling chamber. The venting and pressure relief assembly consists of a one-way vent valve 6 and a sealing vent plate 8. The venting and pressure relief assembly is used to provide internal pressure relief protection.

[0031] An internal sealing assembly is provided at the bottom of the oil filling internal sealing plug 9. The internal sealing assembly includes an interference seal ring 13, a flexible graphite 14, and a copper frame 15. The internal sealing assembly is used to seal and protect the oil plug mounting tube 1 and the oil filling internal sealing plug 9.

[0032] Furthermore, the top surface of the oil filling internal sealing plug 9 is provided with a second vent hole 10, and the inner side of the oil filling internal sealing plug 9 is provided with a sliding mounting groove 11. The sliding mounting groove 11 is symmetrically distributed on the side of the oil filling internal sealing plug 9. A snap-fit ​​fixing mounting component is provided on the inner side of the sliding mounting groove 11, and a venting and pressure relief component is provided on the inner side of the second vent hole 10.

[0033] Furthermore, the snap-fit ​​mounting assembly includes a snap-fit ​​slider 5 and a snap-fit ​​spring 7. The snap-fit ​​spring 7 is fixedly connected to the inner side of the sliding mounting groove 11, and the snap-fit ​​slider 5 is fixedly connected to the other side of the snap-fit ​​spring 7. The snap-fit ​​slider 5 is slidably connected to the inner side of the sliding mounting groove 11. The inner side of the oil plug mounting tube 1 is provided with a snap-fit ​​mounting groove 17, which is symmetrically distributed on the inner side of the oil plug mounting tube 1. The snap-fit ​​slider 5 is slidably connected to the inner side of the snap-fit ​​mounting groove 17. Through the action of the snap-fit ​​mounting assembly, the sliding and fixed installation between the oil plug mounting tube 1 and the oil filling internal sealing plug 9 is realized.

[0034] Furthermore, the venting and pressure relief assembly includes a one-way vent valve 6 and a sealing vent plate 8. The sealing vent plate 8 is fixedly connected to the bottom inner side of the second vent hole 10, and the one-way vent valve 6 is fixedly connected to the inner side of the second vent hole 10. The top surface of the sealing vent plate 8 is provided with micro vent holes 16, which are distributed in a ring at equal intervals on the top surface of the sealing vent plate 8. Through the action of the venting and pressure relief assembly, pressure relief protection is provided when the internal temperature of the internal oil plug rises.

[0035] Furthermore, a sealing mounting groove 12 is provided on the outer side of the oil filling internal sealing plug 9, and an inner groove 18 is provided on the inner side of the oil plug mounting tube 1. An internal sealing component is provided on the inner side of the sealing mounting groove 12 and the inner groove 18.

[0036] Furthermore, the internal sealing assembly includes an interference seal ring 13, flexible graphite 14, and a copper frame 15. The inner side of the sealing mounting groove 12 is fixedly connected to the interference seal ring 13, and the inner side of the inner groove 18 is fixedly connected to the interference seal ring 13. The bottom surface of the oil filling internal sealing plug 9 is fixedly connected to the copper frame 15, and the inner side of the copper frame 15 is fixedly connected to the flexible graphite 14. Through the function of the internal sealing assembly, the inside of the oil plug is sealed and protected. Through the function of the flexible graphite 14 and the copper frame 15, the seal can still be maintained at high temperatures.

[0037] Furthermore, the top outer side of the oil plug mounting tube 1 is fixedly connected with an external thread, the top outer side of the oil plug mounting tube 1 is threadedly connected with an oil plug outer cap 2, the top surface of the oil plug mounting tube 1 is fixedly connected with an outer rubber sealing ring 4, the top surface of the outer rubber sealing ring 4 is fixedly connected with the oil plug outer cap 2, the top surface of the oil filling inner sealing plug 9 is fixedly connected with an outer rubber sealing ring 4, and the outer rubber sealing ring 4 is used for sealing the connection between the oil plug mounting tube 1 and the oil filling inner sealing plug 9.

[0038] Structural Description:

[0039] Oil plug installation tube 1: The inner side can be slidably connected to the oil filling internal sealing plug 9, and the top outer side is provided with external thread for connecting the outer sealing cap 2 of the oil plug. The inner side is provided with symmetrically distributed locking installation grooves 17 and inner grooves 18, which are respectively adapted to the mounting locking slider 5 of the locking and fixing installation component and the interference sealing ring 13 of the internal sealing component, and are the basic carrier for component installation.

[0040] The outer cap of the oil plug 2 has an annular equidistant vent hole 3 on the top and an inner thread that matches the external thread of the oil plug mounting tube 1. It is fixed to the top of the oil plug mounting tube 1 by tightening the thread, which can seal the top of the component and relieve pressure through the vent hole 3 in conjunction with the venting and pressure relief component.

[0041] Vent hole 3: It is located on the top surface of the outer cap 2 of the oil plug and is distributed in a ring at equal intervals. It provides an external channel for the high-pressure gas discharged by the venting and pressure relief component and avoids the accumulation of internal pressure.

[0042] Outer rubber sealing ring 4: It is fixed to the top surface of the oil plug installation tube 1 and the top surface of the oil filling inner sealing plug 9 respectively, forming a ring structure. When the outer sealing cap 2 of the oil plug is tightened, it is squeezed and deformed to fill the gap between the oil plug installation tube 1 and the outer sealing cap 2 of the oil plug, and between the oil filling inner sealing plug 9 and the outer sealing cap 2 of the oil plug, so as to achieve top auxiliary sealing.

[0043] Install the snap-fit ​​slider 5: It is slidably connected to the sliding mounting groove 11 of the oil filling internal sealing plug 9. One side is fixedly connected to the mounting spring 7, and the other side can be embedded into the snap-fit ​​mounting groove 17 of the oil plug mounting tube 1. The snap-fit ​​and fixation between the oil filling internal sealing plug 9 and the oil plug mounting tube 1 is achieved by the spring force.

[0044] One-way vent valve 6: Fixed inside the vent hole 10 of the oil filling internal sealing plug 9, it only allows gas to flow from the inside of the oil plug to the outside in one direction. It opens to release pressure when the pressure is high and closes when the pressure is normal to prevent lubricating oil leakage and external impurities from entering.

[0045] The mounting spring 7 is fixed inside the sliding mounting groove 11 of the oil filling internal sealing plug 9, and the other end is connected to the mounting snap-fit ​​slider 5. Through elastic deformation, the mounting snap-fit ​​slider 5 is pushed into the snap-fit ​​mounting groove 17 to provide power for snap-fit ​​fixing.

[0046] Sealing and venting plate 8: It is fixed to the bottom of the inner side of the vent hole 10 of the oil filling internal sealing plug 9. The top surface is provided with annularly distributed micro vent holes 16, which can guide the high pressure gas inside the oil plug to flow evenly to the one-way vent valve 6, while preventing the lubricating oil from directly contacting the valve.

[0047] The oil filling internal sealing plug 9: the outer side slides to connect the oil plug installation tube 1, the top surface has a second vent hole 10, the side has symmetrically distributed sliding installation grooves 11, the outer side has a sealing installation groove 12, and the bottom surface is fixedly connected to the copper frame 15. It is an integrated installation carrier of the venting and pressure relief component, the snap-fit ​​fixed installation component and the internal sealing component.

[0048] Vent hole 2 10: It is opened on the top surface of the oil filling internal sealing plug 9, and the sealing vent plate 8 and one-way vent valve 6 are installed in sequence on the inner side. It provides an internal channel for the gas inside the oil plug to flow to vent hole 1 3, and is the core channel of the venting and pressure relief component.

[0049] Sliding mounting groove 11: It is opened on the side of the oil filling internal sealing plug 9 and is symmetrically distributed. The fixing spring 7 is fixedly installed on the inner side and the snap-fit ​​slider 5 is slidably connected to it, providing installation and sliding space for the snap-fit ​​fixing mounting assembly;

[0050] Sealing mounting groove 12: It is opened on the outside of the oil filling internal sealing plug 9, corresponding to the inner groove 18 of the oil plug mounting tube 1, and the inner side is fixedly connected to the interference sealing ring 13, which is used to fix the sealing component and ensure the sealing surface fits.

[0051] Interference seal 13: It is fixed in the sealing mounting groove 12 of the oil filling internal sealing plug 9 and the inner groove 18 of the oil plug mounting tube 1 respectively. It is made of elastic high temperature resistant material and fits tightly with the contact surface through interference fit to block the leakage of lubricating oil along the radial gap.

[0052] Flexible graphite 14: fixed inside the copper frame 15, has high temperature resistance of over 600℃ and self-lubricating properties, can closely fit the oil injection channel port of the equipment to form an end face seal, and is suitable for sealing requirements under high temperature conditions.

[0053] Copper frame 15: Fixed to the bottom surface of the oil-filled internal sealing plug 9, in the shape of an annular frame, with flexible graphite 14 wrapped and fixed inside, providing rigid support for the flexible graphite, avoiding excessive deformation of the flexible graphite at high temperature, and ensuring sealing stability;

[0054] Miniature vent holes 16: These are located on the top surface of the sealing vent plate 8 and are distributed in a ring at equal intervals. They can disperse and guide the high-pressure gas inside the oil plug to the one-way vent valve 6, thus preventing the gas from concentrating and impacting the valve components and affecting its service life.

[0055] The slot 17 is located inside the oil plug mounting tube 1 and is symmetrically distributed. The inner side can be slidably connected to the mounting block 5. The internal sealing plug 9 is fixed by engaging with the block and prevents it from sliding axially.

[0056] Inner groove 18: It is formed inside the oil plug mounting pipe 1 and corresponds to the sealing mounting groove 12 of the oil filling internal sealing plug 9. The inner side is fixedly connected to the interference sealing ring 13, which forms a double sealing fixation with the sealing mounting groove to improve the sealing reliability.

[0057] Working principle: When using this utility model, during installation, first insert the internal sealing plug 9 into the inner channel of the oil plug mounting tube 1. During insertion, the inner wall of the oil plug mounting tube 1 presses against the mounting locking slider 5, causing it to compress the mounting fixing spring 7 in the sliding mounting groove 11 and retract into the groove. When the internal sealing plug 9 slides to the target position, the mounting locking slider 5 aligns with the locking mounting groove 17 on the inner side of the oil plug mounting tube 1. The mounting fixing spring 7 rebounds and pushes the mounting locking slider 5 into the locking mounting groove 17, completing the quick locking and fixing of the internal sealing plug 9 and the oil plug mounting tube 1. Subsequently, the outer cap 2 of the oil plug is screwed on... The oil plug is tightly fitted to the top of the oil plug installation tube 1. At this time, the outer rubber sealing ring 4 on the top surface of the oil plug installation tube 1 and the oil filling internal sealing plug 9 is squeezed and deformed, achieving an auxiliary seal at the top to prevent external impurities from entering or internal trace oil and gas from leaking. The internal sealing components form multiple sealing barriers: the outer sealing mounting groove 12 of the oil filling internal sealing plug 9 and the interference sealing ring 13 in the inner groove 18 of the oil plug installation tube 1 tightly fit the contact surface through interference fit, blocking the leakage of lubricating oil along the radial gap; the copper frame 15 at the bottom of the oil filling internal sealing plug 9 provides rigid support for the flexible graphite 14, avoiding excessive deformation of the flexible graphite at high temperature, while the flexible graphite 14 itself has Excellent high-temperature resistance (withstanding temperatures above 600℃) and self-lubricating properties allow it to tightly fit the oil injection channel port of the equipment, forming an end-face seal. Even after high-temperature thermal expansion, it maintains its sealing performance, solving the problem of high-temperature aging and failure of traditional rubber gaskets. When the lubrication system temperature rises due to equipment operation, the internal pressure of the oil plug increases with the temperature. At this time, the pressure pushes the one-way vent valve 6 in the vent hole 10 on the top surface of the oil injection sealing plug 9 to open. High-pressure gas passes sequentially through the annular equidistant micro-vent holes 16 of the sealing vent plate 8, the one-way vent valve 6, and finally exits to the outside through the vent hole 3 of the outer cap 2 of the oil plug, achieving automatic venting. To prevent excessive internal pressure from damaging the sealing structure or deforming the oil plug, the one-way vent valve 6 automatically closes when the internal pressure drops to a safe range, preventing back leakage of lubricating oil or the entry of external impurities, thus ensuring the sealing and cleanliness of the lubrication system. When maintenance and disassembly are required, first loosen and remove the outer cap 2 of the oil plug, then press the mounting clip slider 5 on the outside of the oil plug mounting tube 1 to disengage it from the locking mounting groove 17 and retract it into the sliding mounting groove 11. At this time, the internal sealing plug 9 can be directly pulled out from the oil plug mounting tube 1, completing the quick disassembly without having to deal with the traditional thread corrosion and jamming problem, greatly shortening maintenance time and reducing the risk of component damage.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant oil injection plug, characterized in that, include: The oil plug installation tube (1), the oil plug outer cover (2), and the oil filling inner sealing plug (9) are provided. The oil plug installation tube (1) is slidably connected to the inner side of the oil plug inner sealing plug (9). The top of the oil plug installation tube (1) is threadedly connected to the oil plug outer cover (2). The top surface of the oil plug outer cover (2) is provided with a vent hole (3). The vent hole (3) is distributed in a ring at equal intervals on the top surface of the oil plug outer cover (2). A snap-fit ​​fixing installation assembly is provided between the oil plug installation tube (1) and the oil filling internal sealing plug (9). The snap-fit ​​fixing installation assembly consists of a one-way vent valve (6) and a mounting spring (7). The snap-fit ​​fixing installation assembly is used to snap-fit ​​and fix the oil plug installation tube (1) and the oil filling internal sealing plug (9). A venting and pressure relief assembly is provided inside the oil filling internal sealing plug (9). The venting and pressure relief assembly consists of a one-way vent valve (6) and a sealing vent plate (8). The venting and pressure relief assembly is used to provide internal pressure relief protection. An internal sealing assembly is provided at the bottom of the oil filling internal sealing plug (9). The internal sealing assembly includes an interference seal ring (13), flexible graphite (14) and a copper frame (15). The internal sealing assembly is used to seal and protect the oil plug installation tube (1) and the oil filling internal sealing plug (9).

2. The high-temperature resistant oil filler plug according to claim 1, characterized in that, The top surface of the oil filling internal sealing plug (9) is provided with a second vent hole (10), and the inner side of the oil filling internal sealing plug (9) is provided with a sliding mounting groove (11). The sliding mounting groove (11) is symmetrically distributed on the side of the oil filling internal sealing plug (9). The inner side of the sliding mounting groove (11) is provided with a snap-fit ​​fixing mounting component, and the inner side of the second vent hole (10) is provided with a venting and pressure relief component.

3. The high-temperature resistant oil filler plug according to claim 2, characterized in that, The snap-fit ​​mounting assembly includes a snap-fit ​​slider (5) and a snap-fit ​​spring (7). The snap-fit ​​spring (7) is fixedly connected to the inner side of the sliding mounting groove (11), and the snap-fit ​​slider (5) is fixedly connected to the other side of the snap-fit ​​spring (7). The snap-fit ​​slider (5) is slidably connected to the inner side of the sliding mounting groove (11). The oil plug mounting tube (1) has a snap-fit ​​mounting groove (17) on its inner side. The snap-fit ​​mounting grooves (17) are symmetrically distributed on the inner side of the oil plug mounting tube (1). The snap-fit ​​slider (5) is slidably connected to the inner side of the snap-fit ​​mounting groove (17).

4. A high-temperature resistant oil filler plug according to claim 2, characterized in that, The ventilated pressure relief assembly includes a one-way vent valve (6) and a sealed vent plate (8). The sealed vent plate (8) is fixedly connected to the bottom inner side of the second vent hole (10). The one-way vent valve (6) is fixedly connected to the inner side of the second vent hole (10). The top surface of the sealed vent plate (8) is provided with micro vent holes (16). The micro vent holes (16) are distributed in a ring at equal intervals on the top surface of the sealed vent plate (8).

5. A high-temperature resistant oil filler plug according to claim 1, characterized in that, The outer side of the oil filling internal sealing plug (9) is provided with a sealing installation groove (12), and the inner side of the oil plug installation tube (1) is provided with an inner groove (18). The inner side of the sealing installation groove (12) and the inner side groove (18) are provided with an internal sealing component.

6. A high-temperature resistant oil filler plug according to claim 5, characterized in that, The internal sealing assembly includes an interference seal ring (13), flexible graphite (14), and a copper frame (15). The inner side of the sealing mounting groove (12) is fixedly connected to the interference seal ring (13), the inner side of the inner groove (18) is fixedly connected to the interference seal ring (13), the bottom surface of the oil filling internal sealing plug (9) is fixedly connected to the copper frame (15), and the inner side of the copper frame (15) is fixedly connected to the flexible graphite (14).

7. A high-temperature resistant oil filler plug according to claim 1, characterized in that, The top outer side of the oil plug mounting tube (1) is fixedly connected with an external thread, the top outer side of the oil plug mounting tube (1) is connected with an oil plug outer cap (2), the top surface of the oil plug mounting tube (1) is fixedly connected with an outer rubber sealing ring (4), the top surface of the outer rubber sealing ring (4) is fixedly connected with an oil plug outer cap (2), the top surface of the oil filling internal sealing plug (9) is fixedly connected with an outer rubber sealing ring (4), and the outer rubber sealing ring (4) is used for sealing the connection between the oil plug mounting tube (1) and the oil filling internal sealing plug (9).

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