Composite oil seal metal skeleton structure

Abstract

This utility model discloses a composite oil seal metal skeleton structure, relating to the field of mechanical seal technology, including a connecting structure, a sealing structure, connecting bolts, and a pressurizing structure. The connecting structure serves as the basic support, positioned by a through-hole in the sealing structure via a through-rod, and fixedly connected to both sides of the connecting structure via connecting lugs and connecting bolts. The sealing structure consists of a sealing ring and a flexible sealing ring, which fits against the shaft through elastic deformation. The pressurizing structure, through a wedge block engaging with the guide groove of the connecting structure, converts the axial tightening force of the connecting bolts into radial pressure, pushing the pressurizing block to compress the sealing ring, dynamically increasing the contact pressure between the sealing ring and the shaft. Through the synergistic effect of each structure, an adaptive enhancement of the sealing effect is achieved, solving the problems of insufficient pressure and easy leakage in traditional oil seals.

Description

Technical Field

[0001] This utility model relates to the field of mechanical seal technology, specifically to a composite oil seal metal skeleton structure. Background Technology

[0002] Oil seals, as key sealing components in mechanical transmission systems, are widely used in rotating equipment such as bearings and gearboxes. Their main function is to prevent lubricating oil leakage or the intrusion of external impurities such as dust and moisture. Traditional oil seals are usually composed of an elastic sealing body (such as rubber) and a metal skeleton. Static sealing is achieved through the interference fit between the sealing body and the shaft. They have a simple structure and low cost, and are widely used in industrial fields.

[0003] However, the sealing effect of traditional oil seals is highly dependent on the interference fit design during initial assembly. After long-term operation, the elastic seal body is prone to wear and aging, leading to a reduction in interference fit and a decrease in sealing pressure, which in turn causes leakage problems. In addition, traditional structures cannot dynamically adjust the sealing pressure according to operating conditions (such as changes in speed and pressure). Under high-frequency vibration or impact loads, the fit stability between the seal body and the shaft is poor, further reducing the sealing reliability and making it difficult to meet the sealing requirements of high-precision, long-life equipment. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a composite oil seal metal skeleton structure to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] A composite oil seal metal skeleton structure includes a connecting structure, a sealing structure between the connecting structures, connecting bolts around the sealing structure and the connecting structure, and a pressure-applying structure on the sealing structure. The sealing structure improves the sealing effect through the cooperation of the connecting structure, connecting bolts, and pressure-applying structure.

[0007] Furthermore, the connection structure includes a connecting ring, a first oil seal ring, a pressure ring, a connecting lug, a connecting rod, and a guide groove. The inner ring of the connecting ring is provided with a first oil seal ring, one end surface of the connecting ring is provided with a pressure ring, the outer periphery of the connecting ring is fixedly connected with a connecting lug, a connecting rod is connected between the connecting ring and the pressure ring, and one end surface of the pressure ring is provided with a guide groove.

[0008] Furthermore, the sealing structure includes a sealing ring, a sealing ring, and a through hole. The sealing ring is connected to the sealing ring, and the sealing ring has a through hole that fits into the through rod.

[0009] Furthermore, the pressurizing structure includes a pressurizing block and a wedge block. The outer surface of the pressurizing block is fixedly provided with a wedge block, which fits into the guide groove.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. By using the wedge-shaped block of the pressure-pressurizing structure in conjunction with the guide groove, the axial adjustment of the connecting bolts is converted into radial pressure on the sealing ring. The sealing pressure can be adjusted in real time according to the working conditions, avoiding sealing failure due to wear or vibration and improving sealing stability.

[0012] 2. The oil seal ring of the connecting structure and the sealing ring of the sealing structure form a double sealing interface. Combined with the radial shrinkage characteristics of the flexible sealing ring, the sealing redundancy is significantly improved, effectively preventing fluid leakage and impurity intrusion.

[0013] 3. It can be adapted to different shaft diameters, speeds or pressure conditions by adjusting the tightness of the connecting bolts, without the need to replace the overall structure, reducing maintenance costs and making it suitable for a variety of mechanical transmission scenarios. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the main structure of a composite oil seal metal skeleton structure according to an embodiment of the present utility model;

[0016] Figure 2 This is a schematic diagram of the connection structure of a composite oil seal metal skeleton structure according to an embodiment of the present utility model;

[0017] Figure 3 This is a schematic diagram of a composite oil seal metal skeleton structure according to an embodiment of the present utility model;

[0018] Figure 4 This is a bottom view of the connection structure of a composite oil seal metal skeleton structure according to an embodiment of the present utility model;

[0019] Figure 5 This is a schematic diagram of the pressurization structure of a composite oil seal metal skeleton structure according to an embodiment of the present utility model.

[0020] In the picture:

[0021] 1. Connection structure; 101. Connecting ring; 102. First oil seal ring; 103. Pressure ring; 104. Connecting ear; 105. Through rod; 106. Guide groove; 2. Sealing structure; 201. Sealing ring; 202. Sealing ring; 203. Through hole; 3. Connecting bolt; 4. Pressure structure; 401. Pressure block; 402. Wedge block. 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] According to an embodiment of the present invention, a composite oil seal metal skeleton structure is provided.

[0024] like Figure 1-4 As shown, the composite oil seal metal skeleton structure according to an embodiment of the present utility model includes a connecting structure 1, a sealing structure 2 between the connecting structures 1, connecting bolts 3 on the periphery of the sealing structure 2 and the connecting structure 1, the sealing structure 2 and the connecting structure 1 are fixedly connected by the connecting bolts 3, and a pressure-applying structure 4 is provided on the sealing structure 2. The sealing structure 2 achieves the function of improving the sealing effect through the cooperation of the connecting structure 1, the connecting bolts 3 and the pressure-applying structure 4.

[0025] The connecting structure 1 includes a connecting ring 101, a first oil seal ring 102, a pressure ring 103, a connecting lug 104, a connecting rod 105, and a guide groove 106. The connecting ring 101 has a first oil seal ring 102 on its inner ring, a pressure ring 103 on one end surface of the connecting ring 101, a connecting lug 104 fixedly connected to the outer periphery of the connecting ring 101, a connecting rod 105 connecting the connecting ring 101 and the pressure ring 103, and a guide groove 106 on one end surface of the pressure ring 103.

[0026] The connecting structure 1 serves as the basic support and connecting carrier of the overall structure. Its core components include a connecting ring 101, a first oil seal ring 102, a pressure ring 103, a connecting lug 104, a connecting rod 105, and a guide groove 106. The first oil seal ring 102 on the inner ring of the connecting ring 101 directly contacts the shaft, providing an initial sealing interface. The connecting lug 104 on the outer periphery is used to fix the two connecting structures 1 together through the connecting bolts 3, thereby clamping the sealing structure 2 in the middle. The connecting rod 105 between the connecting ring 101 and the pressure ring 103 passes through the connecting hole 203 of the sealing structure 2, realizing the initial positioning of the connecting structure 1 and the sealing structure 2, and ensuring coaxiality during assembly. The guide groove 106 on one end surface of the pressure ring 103 cooperates with the wedge block 402 of the pressure structure 4, providing a guiding path for the radial movement of the pressure block 401.

[0027] The sealing structure 2 includes a sealing ring 201, a sealing ring 202, and a through hole 203. The sealing ring 201 is connected to the sealing ring 202, and the sealing ring 201 has a through hole 203, which fits into the through rod 105.

[0028] The sealing structure 2 is the core component for achieving the sealing function. It consists of a sealing ring 201, a sealing ring 202, and a through hole 203. The sealing ring 201 is made of elastic material, and its inner side fits against the surface of the shaft. It fills the tiny gaps through its own elastic deformation. The outer sealing ring 202 is a flexible ring. As a deformable pressure object, it will further contract towards the shaft when subjected to radial pressure from the pressure structure 4, increasing the contact pressure to improve the sealing effect. The through hole 203 fits with the through rod 105 of the connecting structure 1. It not only plays a positioning role, but also restricts the axial displacement of the sealing structure 2 when the connecting bolt 3 is tightened, preventing it from shifting under pressure and ensuring the contact stability between the sealing ring 202 and the shaft.

[0029] The pressurizing structure 4 includes a pressurizing block 401 and a wedge block 402. The wedge block 402 is fixedly provided on the outer surface of the pressurizing block 401, and the wedge block 402 fits into the guide groove 106.

[0030] The pressurizing structure 4 consists of a pressurizing block 401 and a wedge block 402. It is the core transmission component that converts the axial force of the connecting bolt 3 into the radial pressure of the sealing ring 202. The pressurizing block 401 is arc-shaped and distributed on the outer periphery of the sealing ring 202. The wedge block 402 on its outer surface forms an inclined surface fit with the guide groove 106 of the pressurizing ring 103. When the connecting bolt 3 drives the pressurizing ring 103 to move, the guide groove 106 generates an axial thrust on the wedge block 402. The axial force is converted into a radial component force by using the inclined surface principle, which pushes the pressurizing block 401 to squeeze towards the center of the sealing ring 202. Since the sealing ring 202 is a flexible material, it will generate centripetal contraction under the action of uniformly distributed radial pressure, which significantly improves the tightness of the fit with the shaft. This solves the leakage problem caused by insufficient contact pressure in traditional oil seals and realizes dynamic adjustment and enhancement of the sealing effect.

[0031] To facilitate understanding of the above-mentioned technical solutions of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below.

[0032] Both sides of the sealing structure 2 are connected to the connecting structure 1. The connecting ring 101 is initially connected by passing through the through hole 203 of the sealing structure 2 through the through rod 105. Then, the connecting rings 101 of the two connecting structures 1 are fixedly connected by the internal threads of the connecting ears 104 of the two connecting rings 101 and the connecting bolt 3. The pressure ring 103 of the connecting structure 1 is directionally connected to the wedge block 402 of the pressure block 401 of the pressure structure 4 through the guide groove 106. The pressure block 401 is divided into four pieces and placed on the outer periphery of the sealing ring 202. The sealing ring 202 is a flexible ring. When the connecting bolt 3 adjusts the spacing between the connecting rings 101, the wedge block 402 of the pressure block 401 is directionally squeezed by the guide groove 106 of the pressure ring 103, so that the wedge block 402 is pushed by force to drive the pressure block 401 to the radial position of the sealing ring 202, thereby pressurizing the sealing ring 202, increasing the connection pressure between the sealing ring 202 and the shaft, and thus improving the sealing effect.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite oil seal metal skeleton structure, characterized in that, It includes a connecting structure (1), a sealing structure (2) between the connecting structures (1), a connecting bolt (3) on the periphery of the sealing structure (2) and the connecting structure (1), the sealing structure (2) and the connecting structure (1) are fixedly connected by the connecting bolt (3), and a pressure structure (4) is provided on the sealing structure (2). The sealing structure (2) achieves the function of improving the sealing effect through the cooperation of the connecting structure (1), the connecting bolt (3) and the pressure structure (4).

2. The composite oil seal metal skeleton structure according to claim 1, characterized in that, The connection structure (1) includes a connecting ring (101), a first oil seal ring (102), a pressure ring (103), a connecting ear (104), a connecting rod (105), and a guide groove (106). The inner ring of the connecting ring (101) is provided with the first oil seal ring (102).

3. The composite oil seal metal skeleton structure according to claim 2, characterized in that, A pressure ring (103) is provided on one end surface of the connecting ring (101), and a connecting ear (104) is fixedly connected to the outer periphery of the connecting ring (101).

4. The composite oil seal metal skeleton structure according to claim 3, characterized in that, A connecting rod (105) is connected between the connecting ring (101) and the pressure ring (103), and a guide groove (106) is provided on one end surface of the pressure ring (103).

5. The composite oil seal metal skeleton structure according to claim 4, characterized in that, The sealing structure (2) includes a sealing ring (201), a sealing ring (202), and a through hole (203). The sealing ring (201) is connected to the sealing ring (202), and the sealing ring (201) has a through hole (203) which fits into the through rod (105).

6. The composite oil seal metal skeleton structure according to claim 5, characterized in that, The pressurizing structure (4) includes a pressurizing block (401) and a wedge block (402). The wedge block (402) is fixedly provided on the outer surface of the pressurizing block (401), and the wedge block (402) fits into the guide groove (106).

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