Wear-resistant floating oil seal convenient to install

Abstract

The utility model relates to the technical field of sealing devices, in particular to an anti-abrasion floating oil seal convenient to install. The sealing device comprises a device body, the device body comprises a sealing ring and an oil seal base, a plurality of mounting holes communicated with the sealing ring and the oil seal base are formed in the device body, springs are arranged in the mounting holes, and an O-shaped sealing ring is arranged in the device body. According to the floating oil seal, the spring is adopted as a depth compensation structure for abrasion of the friction surface of the sealing ring, stable compensation force can be continuously provided under the conditions of long-time use and severe environment, the problem of oil leakage caused by insufficient compensation is effectively avoided, and the service life of the floating oil seal is greatly prolonged. According to the O-shaped ring and the unique installation mode, the sealing device can still keep a good sealing effect in severe environments such as high temperature and corrosion resistance, the risk of oil leakage is reduced, the reliability of equipment operation is improved, and the probability of equipment damage caused by sealing failure is reduced.

Description

Technical Field

[0001] This utility model relates to the field of sealing device technology, specifically to a wear-resistant and easy-to-install floating oil seal. Background Technology

[0002] In mechanical equipment, floating oil seals are a commonly used sealing method, especially in mining and cement production. A traditional floating oil seal consists of a rotating sealing ring and a stationary sealing ring. The sealing effect is achieved through the mechanical friction between the sealing surfaces of the two rings, while a rubber O-ring or other shaped rubber ring embedded outside the sealing ring applies pressure to the workpiece to assist in the sealing process.

[0003] However, traditional floating oil seals have many drawbacks. In extremely harsh working environments, their service life is short, making it difficult to meet the requirements of long-term stable operation. Rubber is prone to deformation under prolonged pressure and is not resistant to high temperatures, which can lead to insufficient pressure on the friction surface of the sealing ring, resulting in oil leakage. Since floating oil seals are usually located at the equipment port, they are difficult to inspect and replace, and damage is often difficult to detect. When oil leakage occurs, it can easily damage bearings and other components, causing significant economic losses to the user. Furthermore, the wear of the friction surfaces of the two sealing rings in traditional floating oil seals relies mainly on rubber rebound for compensation. During prolonged use, the rubber can be compressed and deformed, losing elasticity and resulting in insufficient rebound force, leading to insufficient compensation of the sealing friction surface and ultimately causing oil leakage from the floating oil seal and damage to other parts of the equipment. Moreover, traditional floating oil seals are difficult to install, requiring very strict installation techniques; even slight carelessness can affect the sealing effect and service life. Therefore, developing a new type of wear-resistant and easy-to-install floating oil seal is of great practical significance. It will help improve the sealing reliability and operational stability of mechanical equipment, reduce maintenance costs, and lower equipment failure rates. Utility Model Content

[0004] The purpose of this invention is to overcome the above-mentioned problems and provide a wear-resistant and easy-to-install floating oil seal. To achieve the above objective, this invention adopts the following technical solution:

[0005] A wear-resistant and easy-to-install floating oil seal includes a device body, the device body including a sealing ring and an oil seal base, the sealing ring being disposed on the oil seal base, the device body having a plurality of mounting holes communicating with the sealing ring and the oil seal base, a spring being disposed in the mounting holes, and an O-ring being disposed inside the device body.

[0006] As an improvement, the sealing ring includes an active compensation sealing ring and a passive compensation sealing ring. The mounting hole connects the active compensation sealing ring and the oil seal base. The passive compensation sealing ring is fixed on the sealed workpiece at the top of the active compensation sealing ring. The passive compensation sealing ring is set on the upper end of the oil seal base and rotates with the rotation of the sealed workpiece.

[0007] As an improvement, the oil seal base is provided with a first groove, and a limiting pressure plate is fixed near the top of the oil seal base. The limiting pressure plate extends toward the center of the device body, and the bottom of the active compensation sealing ring is provided with a protrusion. The protrusion is restricted between the first groove and the limiting pressure plate.

[0008] The passive compensation sealing ring has a second groove at its bottom, and the top of the active compensation sealing ring is supported in the second groove.

[0009] As an improvement, the O-ring includes a first O-ring and a second O-ring. The first O-ring is fixed inside the limiting pressure plate as a dustproof seal. The first O-ring intersects with the outer side of the active compensation sealing ring. A plurality of second O-rings are fixed on the outer side of the protrusion. The second O-rings intersect with the inner side of the oil seal base.

[0010] As an improvement, the main body of the device is provided with a dustproof felt.

[0011] The advantages of this utility model are:

[0012] 1. This utility model adopts a spring as a depth compensation structure for the wear of the friction surface of the sealing ring. Compared with the traditional method of relying on rubber rebound compensation, it can continuously provide stable compensation force in long-term use and harsh environments (such as high temperature, high dust, etc.), effectively avoiding oil leakage problems caused by insufficient compensation and greatly extending the service life of the floating oil seal.

[0013] 2. The O-ring and unique installation method of this utility model enable it to maintain a good sealing effect in harsh environments such as high temperature and corrosion resistance, reduce the risk of oil leakage, improve the reliability of equipment operation, and reduce the probability of equipment damage due to seal failure. Attached Figure Description

[0014] Figure 1 This is a structural diagram of a wear-resistant and easy-to-install floating oil seal in Example 1.

[0015] Figure 2 This is a front view of a wear-resistant and easy-to-install floating oil seal according to Example 1.

[0016] Figure 3 In Example 1 Figure 2 Cross-sectional view at point AA.

[0017] Figure 4 In Example 1 Figure 3 Enlarged view of point C in the middle.

[0018] Figure 5 In Example 1 Figure 2 Cross-sectional view at point BB.

[0019] The diagram is labeled as follows:

[0020] 1. Oil seal base; 2. Mounting hole; 3. Spring; 4. Active compensation sealing ring; 5. Passive compensation sealing ring; 6. First groove; 7. Limiting pressure plate; 8. Protrusion; 9. Second groove; 10. First O-ring seal; 11. Second O-ring seal; 12. Dustproof felt. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] In the description of the embodiments of this utility model, it should be noted that if terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and "third" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] Furthermore, the use of terms such as "horizontal," "vertical," and "sag" does not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0024] In the description of the embodiments of this utility model, "a plurality of" means at least two.

[0025] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] The present invention will be described in detail below through specific embodiments to enable a better understanding of the present invention. However, the following embodiments do not limit the scope of protection of the present invention.

[0027] Example 1

[0028] This embodiment discloses a wear-resistant and easy-to-install floating oil seal.

[0029] like Figures 1 to 5 As shown, this embodiment includes a device body, which includes a sealing ring and an oil seal base 1. The sealing ring is disposed on the oil seal base 1. The device body is provided with a plurality of mounting holes 2 that connect the sealing ring and the oil seal base 1. A spring 3 is disposed in the mounting hole 2. An O-ring is disposed inside the device body.

[0030] This embodiment has multiple mounting holes 2.

[0031] The sealing ring includes an active compensation sealing ring 4 and a passive compensation sealing ring 5. The mounting hole 2 connects the active compensation sealing ring 4 and the oil seal base 1. The passive compensation sealing ring 5 is fixed on the top of the active compensation sealing ring 4 and the sealed workpiece. The passive compensation sealing ring 5 is located on the upper part of the oil seal base 1.

[0032] The oil seal base 1 is provided with a first groove 6, and a limiting pressure plate 7 is fixed on the top of the oil seal base 1. The limiting pressure plate 7 extends toward the center of the main body of the device. The bottom of the active compensation sealing ring 4 is provided with a protrusion 8, which is restricted between the first groove 6 and the limiting pressure plate 7.

[0033] The passive compensation sealing ring 5 has a second groove 9 at its bottom, and the active compensation sealing ring 4 has its top resting in the second groove 9.

[0034] The sealing rings include an active compensation sealing ring 4 and a passive compensation sealing ring 5. The active compensation sealing ring 4 and the passive compensation sealing ring 5 are mounted on the oil seal base 1. The main body of the device has several mounting holes 2 connecting the sealing rings and the oil seal base 1. Springs 3 are installed within the mounting holes 2 to provide depth compensation for wear of the sealing rings. The passive compensation sealing ring 5 is fixed to the sealed workpiece at the top of the active compensation sealing ring 4. The oil seal base 1 has a first groove 6, and a limiting pressure plate 7 is fixed at the top of the oil seal base 1, extending towards the center of the main body of the device. The bottom of the active compensation sealing ring 4 has a protrusion 8, which is confined between the first groove 6 and the limiting pressure plate 7. This structural design effectively restricts the position of the active compensation sealing ring 4, ensuring its stability during operation. The bottom of the passive compensation sealing ring 5 has a second groove 9, and the top of the active compensation sealing ring 4 rests within the second groove 9, ensuring a tight connection between the two.

[0035] The O-ring includes a first O-ring 10 and a second O-ring 11. The first O-ring 10 is fixed inside the limiting pressure plate 7. The first O-ring 10 intersects with the outer side of the active compensation sealing ring 4 to form a dustproof ring inside the groove of the base 1. Multiple second O-rings 11 are fixed on the outer side of the protrusion 8. The second O-rings 11 intersect with the inner side of the oil seal base 1.

[0036] The main body of the device is equipped with O-rings, including a first O-ring and a second O-ring. The first O-ring is fixed inside the limiting pressure plate 7 and intersects with the outer side of the active compensation sealing ring 4. The two second O-rings are fixed outside the protrusion 8 and intersect with the inner side of the oil seal base 1. The use of fine-wire O-rings and a specially designed O-ring installation method ensures a good sealing effect while allowing the device to withstand harsh working environments and operate for extended periods without leakage.

[0037] The main body of the device is covered with dustproof felt.

[0038] Dustproof felt is used to prevent dust and other impurities from entering the sealing device, further protecting the sealing structure and extending its service life.

[0039] During installation, the sealing shell and base can be connected together or designed as a single unit. First, place the compensation spring 3 into the mounting hole 2. Then, install the high-temperature resistant, wear-resistant, and oil-resistant sealing ring on the active compensation friction ring and place it into the sealing shell, ensuring that the spring 3 is embedded in the spring 3 hole. Next, press in the active compensation friction sealing ring and press the limiting plate 7 into the slot to prevent the active sealing friction ring from falling off. Finally, glue the dustproof felt together. At this point, the active compensation part of this floating oil seal is installed. The passive compensation sealing friction ring is a single unit and requires no special installation.

[0040] During equipment operation, either the passive compensating sealing ring 5 or the active compensating sealing ring 4 rotates with the rotating parts of the equipment. Because the floating oil seal contains lubricating oil, the friction surfaces of the two parts achieve frictional sealing with an oil film. When the friction surfaces of the active or passive friction sealing rings wear down significantly after prolonged use, the elastic force of the compensating spring 3 provides deep compensation, unaffected by operating temperature. Unlike traditional floating oil seals that rely on the volumetric compression and rebound force of two relatively thick rubber rings for compensation, the spring 3 compensation method of this invention maintains effective compensation capability even after prolonged use or in high-temperature environments, ensuring a sealing effect. This patented product uses a fine O-ring that does not deform at high temperatures and is oil-resistant between the active friction sealing ring and the sealing shell, and operates in a relatively static state, thus achieving a good sealing effect and significantly extending the service life of the floating oil seal.

[0041] In addition, this floating oil seal can also be designed as an integral part of the sealed equipment. The workpiece of the sealed equipment and the passive compensation friction sealing ring are designed as a whole, while the active compensation friction sealing ring is an independent unit. The outer shell and base are designed as a whole with the workpiece of the sealed equipment, and then the active friction sealing ring is installed. The rest of the working mode remains unchanged. This design scheme further saves processing steps and processing difficulty, further reduces costs, and also improves sealing effect and service life.

[0042] The specific embodiments of this utility model have been described in detail above, but they are merely examples, and this utility model is not equivalent to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions to this utility model are also within the scope of this utility model. Therefore, all equivalent changes and modifications made without departing from the spirit and scope of this utility model should be covered within the scope of this utility model.

Claims

1. A wear-resistant and easy-to-install floating oil seal, characterized in that, The device includes a main body, which includes a sealing ring and an oil seal base (1). The sealing ring is disposed on the oil seal base (1). The main body is provided with a plurality of mounting holes (2) that connect the sealing ring and the oil seal base (1). A spring (3) is disposed in the mounting hole (2). An O-ring is disposed inside the main body.

2. The wear-resistant and easy-to-install floating oil seal according to claim 1, characterized in that, The sealing ring includes an active compensation sealing ring (4) and a passive compensation sealing ring (5). The mounting hole (2) connects the active compensation sealing ring (4) and the oil seal base (1). The passive compensation sealing ring (5) rests on the top of the active compensation sealing ring (4) and is disposed on the oil seal base (1).

3. The wear-resistant and easy-to-install floating oil seal according to claim 2, characterized in that, The oil seal base (1) is provided with a first groove (6), and a limiting pressure plate (7) is fixed on the top of the oil seal base (1). The limiting pressure plate (7) extends toward the center of the main body of the device. The bottom of the active compensation sealing ring (4) is provided with a protrusion (8), and the protrusion (8) is restricted between the first groove (6) and the limiting pressure plate (7). The passive compensation sealing ring (5) has a second groove (9) at its bottom, and the active compensation sealing ring (4) is fixed on the second groove (9) at its top.

4. The wear-resistant and easy-to-install floating oil seal according to claim 3, characterized in that, The O-ring includes a first O-ring (10) and a second O-ring (11). The first O-ring (10) is fixed inside the limiting pressure plate (7) and intersects with the outside of the active compensation sealing ring (4). A plurality of second O-rings (11) are fixed outside the protrusion (8) and intersect with the inside of the oil seal base (1).

5. The wear-resistant and easy-to-install floating oil seal according to claim 1, characterized in that, The main body of the device is equipped with a dustproof felt.

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