Double-layer sealing type oil seal

Abstract

The utility model relates to the technical field of oil seals, and discloses a double-layer sealing type oil seal which comprises an oil seal body, a plurality of first clamping holes are formed in one end of the oil seal body, first clamping columns are connected to the inner walls of the first clamping holes in a clamped mode, a cleaning ring is fixedly connected to one end, close to the first clamping holes, of each first clamping column, and a cleaning scraper is fixedly connected to the inner wall of each cleaning ring. When the double-layer sealing type oil seal is used, the double-layer sealing type oil seal is connected to a mechanical device in a sleeved mode, when the mechanical device works, the cleaning scraping piece arranged on the oil seal body can scrape away impurities such as dust, sand grains and metal chippings attached to the surface of a shaft in time when the shaft rotates, and if the impurities enter the oil seal, the cleaning scraping piece can clean the oil seal. When the oil seal is damaged, abrasion of the sealing lip and the shaft is intensified, the sealing performance of the oil seal is reduced, the cleaning scraper is arranged on the cleaning ring, the cleaning ring is connected with the oil seal body in a clamped mode and can be rapidly replaced, and when the cleaning scraper is damaged, the cleaning scraper can be rapidly replaced to prevent the efficiency from being affected.

Description

Technical Field

[0001] This utility model belongs to the field of oil seal technology, specifically a double-layer sealing oil seal. Background Technology

[0002] With the rapid development of modern industry, various mechanical equipment are developing towards high speed, high efficiency, and high load. In these devices, the sealing performance of rotating parts directly affects the operating efficiency, reliability, and service life of the equipment. For example, in key equipment such as automobile engines, industrial gearboxes, and hydraulic systems, effective sealing of oil is the foundation for ensuring the normal operation of the equipment. Once the seal fails, it may lead to oil leakage, which will not only cause energy waste and environmental pollution, but may also cause equipment failure, resulting in serious economic losses and safety hazards.

[0003] However, traditional double-layer sealing oil seals lack a cleaning scraper function, which cannot remove impurities such as dust, sand, and metal shavings from the shaft surface. This allows impurities to enter the oil seal, increasing wear between the sealing lip and the shaft and reducing the sealing performance of the oil seal. Furthermore, traditional double-layer sealing oil seals lack dustproof function, failing to block dust and impurities from the external environment, which causes wear on the oil seal and shaft, reducing the service life of the oil seal. Utility Model Content

[0004] The purpose of this invention is to provide a double-layer sealing oil seal to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-layer sealing oil seal, comprising an oil seal body, one end of which is provided with a plurality of locking holes, the inner wall of which is fitted with a locking post, one end of which is fixedly connected to a cleaning ring near the locking hole, the inner wall of which is fixedly connected to a cleaning scraper, a conveying pipe being connected through one side of the oil seal body, the top end of which is threadedly connected to a pipe cap, and a filter screen being fixedly connected to the inner wall of the conveying pipe.

[0006] Preferably, one end of the oil seal body has multiple second-holes near multiple first-holes, and a dustproof tube is attached to the inner wall of each second-hole, and multiple dustproof nets are attached to the inner wall of the dustproof tube.

[0007] Preferably, the outer surface of the oil seal body is provided with a jacket, an inlet pipe is fixedly connected to one side of the jacket, and an outlet pipe is fixedly connected to the side of the jacket near the inlet pipe.

[0008] Preferably, a jacket is connected through the outer surface of the conveying pipe.

[0009] Preferably, a reinforcing plate is provided inside the oil seal body, and the reinforcing plate is fixedly connected inside the oil seal body shell.

[0010] Preferably, a compression spring is provided inside the oil seal body near the reinforcing plate.

[0011] Preferably, the inner wall of the oil seal body is provided with a drive shaft.

[0012] Preferably, a wear-resistant plate is fixedly connected inside the oil seal body near the drive shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. In this utility model, when using the double-layer sealing oil seal, the double-layer sealing oil seal is fitted onto the mechanical device. When the mechanical device is working, the cleaning scraper set on the oil seal body can promptly scrape off impurities such as dust, sand, and metal shavings adhering to the shaft surface as the shaft rotates. If these impurities enter the oil seal, they will aggravate the wear between the sealing lip and the shaft, reducing the sealing performance of the oil seal. The cleaning scraper is set on the cleaning ring, which is snapped into the oil seal body, allowing for quick replacement. When the cleaning scraper is damaged, it can be quickly replaced to prevent affecting efficiency.

[0015] 2. In this utility model, the dustproof tube snapped onto the outside of the oil seal body can protect the oil seal body. The dustproof tube is equipped with multiple layers of dustproof mesh. The dustproof mesh has a fine mesh structure, which can effectively block dust, sand, fibers and other impurities in the external environment from entering the oil seal, reduce the wear of impurities on the oil seal and shaft, and extend the service life of the oil seal. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall double-layer sealing oil seal of this utility model;

[0017] Figure 2 This is a schematic diagram of the cleaning ring and cleaning scraper of this utility model;

[0018] Figure 3 This is a schematic diagram of the dustproof pipe and dustproof net of this utility model;

[0019] Figure 4 This is a schematic diagram of the reinforcing plate and wear-resistant plate of this utility model.

[0020] The image shows:

[0021] In the diagram: 1. Oil seal body; 2. Clamping hole one; 3. Clamping post one; 4. Cleaning ring; 5. Cleaning scraper; 6. Delivery pipe; 7. Pipe cover; 8. Filter screen one; 9. Clamping hole two; 10. Dustproof pipe; 11. Dustproof net; 12. Jacket; 13. Inlet pipe; 14. Outlet pipe; 15. Reinforcing plate; 16. Compression spring; 17. Drive shaft; 18. Wear-resistant plate. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-4 A double-layer sealing oil seal includes an oil seal body 1. Multiple locking holes 2 are provided at one end of the oil seal body 1. Locking posts 3 are engaged with the inner walls of the locking holes 2. A cleaning ring 4 is fixedly connected to one end of the locking post 3 near the locking hole 2. A cleaning scraper 5 is fixedly connected to the inner wall of the cleaning ring 4. A conveying pipe 6 is threaded through one side of the oil seal body 1. A pipe cap 7 is threaded to the top of the conveying pipe 6. A filter screen 8 is fixedly connected to the inner wall of the conveying pipe 6. When using this double-layer sealing oil seal, it is fitted onto a mechanical device. During operation, the cleaning scraper 5 on the oil seal body 1 can promptly remove dust, sand, metal shavings, and other impurities adhering to the shaft surface as the shaft rotates. If these impurities enter the oil seal, they will accelerate the wear between the sealing lip and the shaft, reducing the sealing performance of the oil seal. The scraper device effectively avoids this situation. This process extends the service life of the oil seal and shaft. The scraper prevents impurities from accumulating on the sealing surface of the oil seal, ensuring a good fit between the sealing lip and the shaft, thereby improving the sealing effect and reducing the possibility of oil leakage. Even in harsh working environments, such as dusty places like mines and construction sites, the oil seal can still operate normally. Moreover, during the scraping process, the contact between the cleaning scraper 5 and the shaft surface generates a certain amount of heat transfer, which helps to dissipate the heat generated during shaft rotation, playing a certain auxiliary heat dissipation role and preventing the oil seal from aging and deforming due to excessive temperature, further improving the performance and reliability of the oil seal. The cleaning scraper 5 is set on the cleaning ring 4, which is snapped into the oil seal body 1, allowing for quick replacement. When the cleaning scraper 5 is damaged, it can be quickly replaced to prevent affecting efficiency.

[0024] In this embodiment, preferably, one end of the oil seal body 1 has multiple locking holes 9 near the multiple locking holes 2. A dustproof tube 10 is fitted into the inner wall of each locking hole 9, and multiple dustproof nets 11 are fitted into the inner wall of the dustproof tube 10. The dustproof tube 10 fitted onto the outside of the oil seal body 1 provides protection for the oil seal body 1. Multiple dustproof nets 11 are installed inside the dustproof tube 10. The dustproof nets 11 have a fine mesh structure, effectively blocking dust, sand, fibers, and other impurities from the external environment from entering the oil seal. In dusty working environments, such as construction sites, mines, and foundries, the dustproof nets 11 prevent these impurities from adhering to the shaft surface or entering the oil seal sealing area, reducing contamination. The dustproof mesh 11 acts as a barrier, reducing the risk of impurities eroding the sealing lip and ensuring good elasticity and sealing performance. This prevents oil seal leakage for a long time. Furthermore, by preventing impurities from entering, the dustproof mesh 11 helps maintain the cleanliness and normal operation of the oil seal. This reduces abnormal wear, jamming, or seal failure caused by impurities, improves the stability and reliability of equipment operation, reduces downtime for maintenance due to oil seal failure, and increases production efficiency.

[0025] In this embodiment, preferably, a jacket 12 is provided on the outer surface of the oil seal body 1. An inlet pipe 13 is fixedly connected to one side of the jacket 12, and an outlet pipe 14 is fixedly connected to the side of the jacket 12 near the inlet pipe 13. The jacket 12 on the outer surface of the oil seal body 1 can protect the oil seal. Media of different temperatures can be transported through the inlet pipe 13. The jacket 12 can control the working temperature of the oil seal by circulating media of different temperatures. Whether it is a high-temperature environment requiring heat dissipation or a low-temperature environment requiring heating, the jacket 12 can keep the oil seal within a suitable working temperature range, avoiding the impact of excessively high or low temperatures on the performance and lifespan of the oil seal. The appropriate temperature helps maintain the elasticity and flexibility of the oil seal material, allowing the sealing lip of the oil seal to better fit the shaft surface, thereby improving sealing performance and reducing the possibility of oil leakage. At the same time, a stable temperature can also prevent the oil seal material from deforming or developing gaps due to thermal expansion and contraction, further ensuring the reliability of the seal. Moreover, excessively high temperatures will accelerate the aging and wear of the oil seal material, while excessively low temperatures may make the oil seal material brittle and reduce its fatigue resistance. The jacket 12 can control the working temperature of the oil seal within a reasonable range, slowing down the aging rate of the oil seal material, reducing the degree of wear, thereby extending the service life of the oil seal and reducing equipment maintenance costs and downtime.

[0026] In this embodiment, preferably, a jacket 12 is connected through the outer surface of the delivery pipe 6. The delivery pipe 6 passes through the jacket 12 and is connected to the oil seal body 1. The delivery pipe 6 can deliver and provide lubricating oil to the oil seal body 1, reducing the friction coefficient between the sealing lip and the shaft, reducing losses, and at the same time playing a role in cooling and rust prevention, extending the service life of the oil seal and the shaft. Moreover, the lubricant can fill the tiny gap between the sealing lip and the shaft, playing a role in auxiliary sealing, enhancing the sealing performance of the oil seal, and reducing the possibility of oil leakage. Especially for some equipment with pressure fluctuations or slight shaft oscillations, the lubricant can better adapt to these changes and maintain a good sealing effect.

[0027] In this embodiment, preferably, a reinforcing plate 15 is provided inside the oil seal body 1. The reinforcing plate 15 is fixedly connected inside the shell of the oil seal body 1. The reinforcing plate 15 is usually made of high-strength metal or composite material, which can enhance the overall structural strength of the oil seal. When the oil seal is working, it needs to withstand the pressure from the oil, the rotational force of the shaft, and the force of the external environment. The reinforcing plate 15 can effectively disperse these forces, prevent the oil seal from deforming, cracking or being damaged due to excessive force, and extend the service life of the oil seal. Moreover, under the high-speed rotation of the shaft and the pressure of the oil, the sealing port of the oil seal is prone to deformation, affecting the sealing effect. The reinforcing plate 15 can support the key parts of the oil seal, keep it in the correct shape and size, and ensure that the sealing lip and the shaft surface always maintain a good fit, thereby improving the sealing performance and reducing the possibility of oil leakage.

[0028] In this embodiment, preferably, a compression spring 16 is provided inside the oil seal body 1 near the reinforcing plate 15. The compression spring 16 can apply continuous and stable pressure to the sealing lip of the oil seal, so that it fits tightly against the shaft surface. This stable pressure can ensure that the sealing lip maintains a good sealing state under different working conditions, such as changes in shaft speed and fluctuations in oil pressure, effectively preventing oil leakage. As the oil seal is used, the sealing lip will inevitably wear, resulting in an increase in the gap between it and the shaft. The compression spring 16 can compensate for the wear of the sealing lip through its own elastic deformation, so that the sealing lip always maintains good contact with the shaft surface, maintains sealing performance, and extends the service life of the oil seal.

[0029] In this embodiment, preferably, the inner wall of the oil seal body 1 is provided with a drive shaft 17, and the oil seal body 1 is disposed on the drive shaft 17.

[0030] In this embodiment, preferably, a wear-resistant plate 18 is fixedly connected inside the oil seal body 1 near the drive shaft 17. The wear-resistant plate 18 is generally made of a material with high hardness and good wear resistance. Installing it at the part where the oil seal contacts the shaft can effectively reduce the wear of the oil seal. Friction will be generated between the shaft and the oil seal during rotation. The wear-resistant plate 18 can withstand this friction, protect the main material of the oil seal from rapid wear, thereby extending the service life of the oil seal and reducing the maintenance cost of the equipment.

[0031] In this embodiment, a testing device for a double-layer sealing oil seal is used. When the double-layer sealing oil seal is used, it is fitted onto a mechanical device. When the mechanical device is working, the cleaning scraper 5 set on the oil seal body 1 can promptly scrape off dust, sand, metal shavings, and other impurities attached to the shaft surface as the shaft rotates. If these impurities enter the oil seal, they will aggravate the wear between the sealing lip and the shaft, reducing the sealing performance of the oil seal. The cleaning scraper 5 is set on the cleaning ring 4, which is snapped into the oil seal body 1 for quick replacement. A dustproof tube 10 is snapped onto the outside of the oil seal body 1. Multiple dustproof nets 11 are set inside the dustproof tube 10. The dustproof nets 11 have a fine mesh structure, which can effectively block dust, sand, fibers, and other impurities from the external environment from entering the oil seal, reducing the wear of impurities on the oil seal and shaft.

[0032] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A double seal oil seal comprising an oil seal body (1), characterized in that: The oil seal body (1) has multiple locking holes (2) at one end. A locking post (3) is locked into the inner wall of the locking hole (2). A cleaning ring (4) is fixedly connected to one end of the locking post (3) near the locking hole (2). A cleaning scraper (5) is fixedly connected to the inner wall of the cleaning ring (4). A conveying pipe (6) is connected through one side of the oil seal body (1). A pipe cap (7) is threaded to the top of the conveying pipe (6). A filter screen (8) is fixedly connected to the inner wall of the conveying pipe (6).

2. A dual seal oil seal according to claim 1 wherein: The oil seal body (1) has multiple card holes (9) near one of the multiple card holes (2). A dustproof tube (10) is attached to the inner wall of the card hole (9), and multiple dustproof nets (11) are attached to the inner wall of the dustproof tube (10).

3. A dual seal oil seal according to claim 1 wherein: The outer surface of the oil seal body (1) is provided with a jacket (12), and an inlet pipe (13) is fixedly connected to one side of the jacket (12), and an outlet pipe (14) is fixedly connected to the side of the jacket (12) near the inlet pipe (13).

4. A dual seal oil seal as in claim 1 wherein: A jacket (12) is connected through the outer surface of the conveying pipe (6).

5. A double-layer sealing oil seal according to claim 1, characterized in that: The oil seal body (1) is provided with a reinforcing plate (15) inside, and the reinforcing plate (15) is fixedly connected to the inside of the shell of the oil seal body (1).

6. A dual seal oil seal as claimed in claim 1, wherein: A compression spring (16) is provided inside the oil seal body (1) near the reinforcing plate (15).

7. A dual seal oil seal as in claim 1 wherein: The inner wall of the oil seal body (1) is provided with a drive shaft (17).

8. A dual seal oil seal according to claim 1 wherein: The wear-resistant plate (18) is fixedly connected inside the oil seal body (1) near the drive shaft (17).

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