Pressure relief double-lip hub oil seal cover
By designing supporting frames, oil grooves, sliding blocks and oil storage chambers in the pressure relief double lip hub oil seal, pressure balance and lubricating oil supplementation are achieved, solving the problems of oil seal wear and excessive pressure, and improving the reliability of the seal and durability.
Patent Information
- Application Number
- CN202420963344.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-07
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-05-07
AI Technical Summary
Due to pressure sealing, the existing pressure relief double-lip hub oil seals cause excessive wear of the oil seal when the internal pressure is too high, and lack effective pressure balance and lubricating oil replenishment mechanism.
A pressure relief double-lip hub oil seal cover including a support frame, oil groove, sliding groove, sliding block, oil storage chamber and spring is designed. Lubricating oil is stored through the oil groove, the sliding block balances the internal and external oil pressure, and the oil storage chamber balances the pressure, and the spring is Provides the function of replenishing lubricants to ensure the stability and durability of the seal.
It effectively improves the reliability and durability of mechanical seals, reduces maintenance frequency and complexity, enhances structural stability and adaptability, and ensures long-term stability and reliability of sealing effects.
Smart Images
Figure CN222229444U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sealing, in particular to a pressure relief double-lip hub oil seal cover. Background Art
[0002] Oil seal is the customary name for general seals. Simply put, it is a seal for lubricating oil. It is a mechanical component used to seal grease. It isolates the parts that need lubrication in the transmission components from the output components to prevent the lubricating oil from leaking. The seals used for static and dynamic seals are called oil seals. The representative form of oil seals is TC oil seals, which are double-lip oil seals with a self-tightening spring and completely covered with rubber. The oil seal generally refers to this TC skeleton oil seal.
[0003] The existing pressure relief double lip hub oil seal cover has good sealing due to pressure sealing. However, when the internal pressure is too high due to the good sealing, a large local pressure is often generated on the oil seal, resulting in excessive wear of the oil seal. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide a pressure relief double-lip hub oil seal cover to solve the technical problem of excessive wear of the oil seal when the internal pressure is too large.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure relief double-lip hub oil seal cover, comprising a support frame, an oil groove is provided on the surface of the support frame, a sliding groove is provided on one side of the support frame, a sliding block is provided inside the sliding groove, and oil storage cavities are provided on both sides of the sliding block.
[0006] By adopting the above technical solution, the support frame provides support for the sealing sleeve, so that the sealing sleeve can stably maintain the existing shape, the interior of the oil tank can store lubricating oil, so that the lubricating oil can be replenished when the external lubricating oil is lacking, the sliding block can balance the internal and external oil pressures, so that the sliding block remains stable, and the oil storage chamber can balance the pressure when the internal and external oil pressures are unbalanced to prevent the pressure from crushing the sealing sleeve. Through the unique interaction of its components, the reliability and durability of the mechanical seal are effectively improved, while the frequency and complexity of maintenance are reduced.
[0007] Furthermore, a plurality of the oil grooves are provided, and the plurality of the oil grooves are evenly distributed in a ring shape along the central axis of the support frame.
[0008] By adopting the above technical solution, multiple oil grooves can store sufficient lubricating oil. At the same time, the spaced oil grooves can maintain the support of the support frame to the sealing sleeve, ensuring that the sealing sleeve maintains its original shape. The design of the oil grooves not only improves the lubrication efficiency, but also enhances the structural stability and durability of the entire cover, thereby providing an efficient and reliable sealing solution.
[0009] Furthermore, a plurality of sliding blocks are provided, and springs are provided between the plurality of sliding blocks and the support frame.
[0010] By adopting the above technical solution, multiple sliding blocks and oil grooves correspond to each other, so that when the external oil pressure is too large, the oil stored in the oil groove can be stored in the oil storage chamber, and the spring can apply pressure to the sliding block outward to balance the internal and external pressures. The combined use of the sliding block and the spring not only increases the adaptability and flexibility of the cover, but also improves the resistance of the entire system to extreme working conditions, thereby ensuring the long-term stability and reliability of the sealing effect.
[0011] Furthermore, a sealing sleeve is provided on the outer side of the support frame, and a spring groove is provided on an inner wall of one side of the sealing sleeve.
[0012] By adopting the above technical solution, the sealing sleeve can provide sealing to the outside to prevent leakage of lubricating oil, and the inside of the spring groove can provide an installation position for the compression spring to prevent the compression spring from falling out. The combined use of the sealing sleeve and the spring groove not only improves the sealing effect of the entire cover, but also increases the durability and adaptability of the system, so that the cover can maintain high efficiency and stable performance under various working conditions.
[0013] Furthermore, a compression spring is arranged inside the spring groove, a sealing lip is arranged below the spring groove, and a dustproof lip is arranged on the other side of the sealing sleeve.
[0014] By adopting the above technical scheme, the compression spring can compress the bottom sealing lip so that the sealing lip can obtain sufficient pressure, and the dustproof lip can be used to prevent dust pollution, thereby increasing the functionality and reliability of the entire pressure relief double-lip oil-proof seal. The compression spring ensures the effective sealing of the sealing lip, and the dustproof lip effectively prevents external pollution. These designs together ensure the stable operation and long-term durability of the entire sealing system under various environmental conditions.
[0015] Furthermore, the corners of the support frame are all rounded.
[0016] By adopting the above technical solution, the rounded corners can increase the force-bearing area and prevent the sharp corners from hitting the inside of the sealing sleeve during movement and causing internal cracks. The rounded corner design on the support frame not only increases the stability and durability of the structure, but also provides additional protection for the sealing sleeve. These advantages jointly improve the overall performance and reliability of the pressure relief double-lip oil-tightening seal cap and ensure its long-term and effective operation under various working conditions.
[0017] Furthermore, a bending portion is provided between the sealing lip and the dustproof lip.
[0018] By adopting the above technical solution, the flexure can be deformed under the pressure of the compression spring, so that the sealing lip can move downward to improve the sealing degree. The addition of the flexure not only improves the adaptability and adjustment ability of the sealing lip, but also enhances the durability and reliability of the entire sealing system, making the pressure relief double lip oil-tightening seal more suitable for various complex and changing working environments, ensuring its long-term stable and effective sealing performance.
[0019] Furthermore, the support frame is made of stainless steel, and the sealing sleeve is made of rubber.
[0020] By adopting the above technical solution, the combination of the stainless steel support frame and the rubber sealing sleeve makes the pressure relief double lip oil-tight seal cover have both a sturdy and durable structure and efficient and flexible sealing performance, making it an ideal choice for adapting to various working conditions and ensuring long-term stable and effective sealing effect.
[0021] In summary, the utility model mainly has the following beneficial effects:
[0022] 1. The utility model is provided with a support frame, an oil groove and a sliding block. The sliding block can achieve a certain pressure balance. When the external oil pressure is too high, the spring contracts to provide a certain space so that the pressure of the oil can be released, thereby preventing abnormal wear of the sealing ring due to excessive oil pressure.
[0023] 2. The utility model provides an oil storage chamber. When the internal pressure is too high, the sliding block is pressed upward, so that the internal lubricating oil enters the oil storage chamber, creating space to facilitate the movement of the sliding block and prevent the external pressure from being too high.
[0024] 3. The utility model provides a spring and an oil storage chamber. When the external lubricating oil is insufficient, since there is a certain amount of lubricating oil in the internal storage chamber, the gravity is large, the spring extends downward, and the lubricating oil in the oil storage chamber flows out, thereby replenishing the oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0026] Figure 2 It is a three-dimensional structural schematic diagram of the support frame of the utility model;
[0027] Figure 3 It is a rear view structural schematic diagram of the support frame of the utility model;
[0028] Figure 4 It is a schematic diagram of the half-section structure of the utility model.
[0029] In the figure: 1. support frame; 2. oil groove; 3. sliding groove; 4. sliding block; 5. oil storage chamber; 6. sealing sleeve; 7. spring groove; 8. compression spring; 9. sealing lip; 10. dustproof lip; 11. spring; 12. flexure. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0031] The following describes an embodiment of the utility model based on its overall structure.
[0032] Embodiment 1:
[0033] A pressure relief double lip hub oil seal cover, such as Figure 1-Figure 4 As shown, it includes a support frame 1, an oil groove 2 is provided on the surface of the support frame 1, a sliding groove 3 is provided on one side of the support frame 1, a sliding block 4 is provided inside the sliding groove 3, and oil storage chambers 5 are provided on both sides of the sliding block 4. The support frame 1 provides a solid structural foundation for the entire mechanism, ensuring that the sealing sleeve 6 can stably maintain its shape. The setting of the oil groove 2 allows the lubricating oil to be stored, thereby providing replenishment when the external lubricating oil is insufficient, which not only reduces the maintenance requirements but also ensures the smooth operation of the mechanical parts. The sliding block 4 plays the role of balancing the internal and external oil pressures in this system, maintaining the stability of the entire system and preventing damage caused by abnormal oil pressure. The oil storage chamber 5 plays a role when the oil pressure is unbalanced, and protects the sealing sleeve 6 from damage due to excessive pressure by adjusting the oil pressure.
[0034] See also Figure 2 and Figure 3 There are multiple oil grooves 2, and the multiple oil grooves 2 are evenly distributed in a ring shape along the central axis of the support frame 1. The even distribution of the multiple oil grooves 2 in a ring shape along the central axis of the support frame 1 enhances the functionality and efficiency of the entire structure. The oil grooves 2 provide sufficient space to store lubricating oil and increase the accommodation space, which not only ensures the sufficient supply of lubricating oil, but also helps to maintain the balance and stability of the entire system. At the same time, these spaced oil grooves 2 form a uniform structural layout on the support frame 1, which can support the sealing sleeve 6 and maintain its stable shape, which not only increases the structural strength of the entire cover, but also optimizes the distribution of force, thereby reducing the possibility of wear and damage due to uneven pressure.
[0035] See also Figure 3 and Figure 4The outer side of the support frame 1 is provided with a sealing sleeve 6, and a spring groove 7 is provided on the inner wall of one side of the sealing sleeve 6. The sealing sleeve 6 is tightly sleeved on the outer side of the support frame 1, playing a key sealing role and effectively preventing the leakage of lubricating oil. This not only prevents the internal lubricating oil of the machine from leaking outward, but also ensures the efficient operation of the entire system. The design of the spring groove 7 provides an ideal position to install the compression spring 11, which not only fixes the spring 11 in the appropriate position, but also ensures that the spring 11 can play a role.
[0036] See also Figure 4 A compression spring is arranged inside the spring groove 7, a sealing lip 9 is arranged below the spring groove 7, a dustproof lip 10 is arranged on the other side of the sealing sleeve 6, and a compression spring 11 is located inside the spring groove 7. Its main function is to apply pressure to the sealing lip 9 to ensure its close fit, thereby achieving effective sealing. It not only ensures the integrity of the seal, but also prevents liquid leakage and maintains the normal operation of the system. On the other hand, the dustproof lip 10 is located on the other side of the sealing sleeve 6 to block dust and other tiny particles from entering the sealing area, keep the internal mechanical parts clean and extend their service life, because the accumulation of dust and impurities may cause wear, corrosion or other forms of damage.
[0037] See also Figure 4 The corners of the support frame 1 are all rounded. The rounded corners of the support frame 1 improve the force distribution of the entire support frame 1 and make it more uniform. When the mechanical equipment is running, the sharp corners are often where stress is concentrated, which may cause premature fatigue and damage to the material. By designing these corners as rounded corners, this stress concentration can be effectively reduced, thereby extending the service life of the support frame 1. In addition, the rounded corner design also helps to protect the sealing sleeve 6. In a dynamic working environment, sharp corners are prone to scratching or hitting the sealing sleeve 6 during movement or vibration, which may cause cracks or other damage inside the sealing sleeve 6, thereby affecting its sealing effect. The rounded corners can reduce this risk and ensure that the sealing sleeve 6 is better protected during movement, thereby improving the reliability and safety of the overall equipment.
[0038] See also Figure 1 , Figure 3 and Figure 4A flexure 12 is provided between the sealing lip 9 and the dust lip 10. The flexure 12 adds extra flexibility and adaptability to the entire sealing system. The main function of the flexure 12 is to provide deformation capability under the action of the compression spring 11, so that the sealing lip 9 can move downward as needed, thereby improving the sealing effect, allowing the sealing lip 9 to automatically adjust its position when encountering different shaft diameters, ensuring that good sealing contact is always maintained with the contact surface. In addition, the flexure 12 means that the sealing system can better adapt to dimensional fluctuations caused by mechanical movement or temperature changes, thereby reducing wear and damage caused by hard contact, and under long-term operation conditions, it helps to maintain the integrity of the sealing system and extend its service life.
[0039] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The support frame 1 is made of stainless steel, and the sealing sleeve 6 is made of rubber. Stainless steel, as the material of the support frame 1, has the characteristics of high strength, corrosion resistance and wear resistance, which enables the support frame 1 to maintain its structural integrity and stability in various harsh environments, and can keep the sealing sleeve 6 in the appropriate position when facing high pressure or extreme temperature changes. On the other hand, the selection of rubber material as the material of the sealing sleeve 6 provides excellent sealing performance for the pressure relief double lip oil seal cap. Rubber has good flexibility and adaptability, and can maintain its shape and sealing effect under different pressure and temperature conditions. The rubber's absorption performance for vibration and impact is also beneficial to reduce wear during movement and increase the life of the entire sealing system.
[0040] The implementation principle of the utility model is as follows: first, when the internal pressure continues to rise, the sliding block 4 continues to press upward, so that the internal lubricating oil enters the oil storage chamber 5, creating space to facilitate the sliding block 4 to continue to move and perform pressure relief operation. When the external lubricating oil is insufficient, due to the presence of a certain amount of lubricating oil in the internal storage chamber, the gravity is greater, the spring 11 extends downward, and the lubricating oil in the oil storage chamber 5 flows out, thereby replenishing the oil.
[0041] Embodiment 2:
[0042] See also Figure 4 , the sliding block 4 is provided with multiple, and springs 11 are provided between the multiple sliding blocks 4 and the support frame 1. Each sliding block 4 corresponds to the corresponding oil groove 2, ensuring that when the external oil pressure is too high, the oil in the oil groove 2 can be effectively transferred to the oil storage chamber 5, allowing the oil to flow between different components, thereby alleviating the wear caused by excessive oil pressure. The spring 11 provides the necessary external force for the sliding block 4, so that it can be adjusted according to the changes in the internal and external oil pressure. This dynamic adjustment mechanism helps to balance the internal and external pressures and prevent damage to the sealing sleeve 6 due to excessive oil pressure.
[0043] The implementation principle of the utility model is: first, when the external oil pressure is too large, the spring 11 contracts to provide a certain space so that the pressure of the oil can be released, and the multiple springs 11 and the sliding block 4 can maintain the pressure balance.
[0044] Parts not involved in the present invention are the same as the prior art or can be implemented by using the prior art, and will not be described in detail here.
[0045] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A pressure relief double lip hub oil seal cover, characterized in that: The invention comprises a support frame (1), an oil groove (2) is provided on the surface of the support frame (1), a sliding groove (3) is provided on one side of the support frame (1), a sliding block (4) is provided inside the sliding groove (3), and oil storage chambers (5) are provided on both sides of the sliding block (4).
2. The pressure relief double-lip hub oil seal cover according to claim 1, characterized in that: A plurality of the oil grooves (2) are provided, and the plurality of the oil grooves (2) are evenly distributed in a ring shape along the central axis of the support frame (1).
3. The pressure relief double lip hub oil seal cover according to claim 1, characterized in that: A plurality of the sliding blocks (4) are provided, and a spring (11) is provided between each of the plurality of sliding blocks (4) and the support frame (1).
4. The pressure relief double-lip hub oil seal cover according to claim 1, characterized in that: A sealing sleeve (6) is sleeved on the outer side of the support frame (1), and a spring groove (7) is provided on an inner wall of one side of the sealing sleeve (6).
5. The pressure relief double-lip hub oil seal cover according to claim 4, characterized in that: A compression spring (8) is arranged inside the spring groove (7), a sealing lip (9) is arranged below the spring groove (7), and a dustproof lip (10) is arranged on the other side of the sealing sleeve (6).
6. The pressure relief double-lip hub oil seal cover according to claim 1, characterized in that: The corners of the support frame (1) are all provided with rounded corners.
7. The pressure relief double-lip hub oil seal cover according to claim 5, characterized in that: A flexure (12) is provided between the sealing lip (9) and the dust lip (10).
8. The pressure relief double-lip hub oil seal cover according to claim 4, characterized in that: The support frame (1) is made of stainless steel, and the sealing sleeve (6) is made of rubber.