Pressure impact resistant oil seal back support ring structure

Abstract

The utility model discloses a pressure impact resistant oil seal back support ring structure which comprises a back support ring block, a groove is formed in the outer wall of the back support ring block, an elastic ring is arranged on the inner wall of the groove, a reinforcing cushion block is arranged on the outer wall of the back support ring block, and a flexible shell is connected to the outer wall of the back support ring block in a pluggable mode. According to the utility model, the plurality of groups of back support ring blocks are arranged and have the same size, the back support ring blocks are clamped on the outer wall of the elastic ring through the grooves to be fixed, and the elastic ring plays a role in limiting, so that the back support ring blocks are tightly attached together, and the joints of the back support ring blocks are attached together to form an annular structure; the back support ring blocks can be flexibly combined according to the diameter of the pipeline, so that the practicability is better; a certain buffering effect is achieved when the flexible shell is attached to the oil seal, the supporting performance of the back supporting ring block is better through the reinforcing cushion block, and the impact resistance effect of the back supporting ring block is better.

Description

Technical Field

[0001] The utility model relates to the technical field of oil seal back support rings, in particular to a pressure impact resistant oil seal back support ring structure. Background Art

[0002] The oil seal backing ring, also known as the guide ring, is an important component in the mechanical sealing system. It is usually used in conjunction with the oil seal to play a supporting and positioning role. The following is a detailed explanation. The oil seal backing ring helps the oil seal maintain the correct position and direction by providing a smooth surface, thereby ensuring effective sealing. It can reduce the friction of the oil seal during operation and extend the service life of the oil seal. When selecting the material of the oil seal backing ring, the temperature, pressure of the working environment and the corrosiveness of the medium are usually considered. Commonly used materials include polytetrafluoroethylene (PTFE) and other high-performance plastics that are wear-resistant and high-temperature resistant.

[0003] The existing back-up ring design is usually relatively simple and mainly serves as a basic support function. However, this design has significant limitations in practicality. In particular, when facing pipeline systems with different diameters, the back-up ring often needs to be customized according to specific sizes, which means that back-up rings of different specifications are difficult to interchange. In production practice, if the existing back-up ring needs to be replaced and there are insufficient spare parts, a new customization is required, which is not only time-consuming and labor-intensive, but may also cause production process interruptions and affect production efficiency.

[0004] In addition, the main task of the back-up ring is to provide support and precise positioning for the oil seal. It is in direct contact with the oil seal. During this process, if the back-up ring is subjected to the impact of extrusion force, the oil seal will also feel this pressure, which may be damaged or reduce the sealing efficiency. How to enhance the pressure shock tolerance of the back-up ring to protect the oil seal from damage and ensure the reliability and durability of the entire sealing system. Utility Model Content

[0005] In order to solve the problem that when an oil seal back-up ring supports and positions the oil seal, when facing pipeline systems with different diameters, it is often necessary to customize the back-up ring according to specific sizes, which means that back-up rings of different specifications are difficult to interchange. The utility model provides a pressure impact resistant oil seal back-up ring structure to solve the above problem.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A pressure impact resistant oil seal back-up ring structure comprises a back-up ring block, a groove is provided on the outer wall of the back-up ring block, an elastic ring is provided on the inner wall of the groove, a reinforcing pad is provided on the outer wall of the back-up ring block, a flexible shell is pluggably connected to the outer wall of the back-up ring block, a buffer pad is installed on the side wall of the back-up ring block, and arc chamfers are provided at the corners of the back-up ring block.

[0008] As a preferred solution of the utility model, the back-supporting ring blocks are provided in multiple groups and are respectively located on the outer wall of the elastic ring, and the back-supporting ring blocks are arc-shaped block structures.

[0009] As a preferred solution of the utility model, the material of the back-supporting ring block is metal material, and the cross-section of the back-supporting ring block is an L-shaped structure.

[0010] As a preferred solution of the utility model, the groove is provided at the corner of the back-supporting ring block, and the cross-section of the groove is a circular structure, and the cross-section of the reinforcing pad is a triangular structure.

[0011] As a preferred solution of the utility model, the reinforcing pads are provided in multiple groups and are respectively located on the outer wall of the back-supporting ring block, and the reinforcing pads are located directly above the elastic ring.

[0012] As a preferred solution of the utility model, the cross section of the flexible shell is a concave structure, and the flexible shell is provided in multiple groups and is respectively located on the outer wall of the back-supporting ring block.

[0013] As a preferred solution of the utility model, the buffer pads are provided in two groups and are respectively located on the opposite side walls of the back support ring block, the arc chamfers are provided in multiple groups and are respectively located at the corners of the back support ring block, and the arc chamfers are located on one side of the reinforcing pad.

[0014] The utility model provides multiple groups of back-supporting ring blocks with the same size in the back-supporting ring structure of the pressure-shock-resistant oil seal. It is only necessary to select different numbers of back-supporting ring blocks according to the size of the pipeline oil seal and install them on the pipeline. Then, the back-supporting ring blocks are clamped on the outer wall of the elastic ring through the groove for fixation. The elastic ring plays a limiting role, so that the back-supporting ring blocks are tightly fitted together, and then the joints of the back-supporting ring blocks are fitted together to form an annular structure. When the back-supporting ring blocks are fitted together, the buffer pads are fitted together to play a certain buffering role, and the practicality of the device is better, thereby solving the problem that when facing pipeline systems with different diameters, it is often necessary to customize the back-supporting rings according to specific sizes, which means that back-supporting rings of different specifications are difficult to interchange and use. In production practice, if the existing back-supporting ring needs to be replaced and the spare parts are insufficient, a new customization must be carried out, which is not only time-consuming and labor-intensive, but may also cause the production process to be interrupted and affect production efficiency.

[0015] By clamping the flexible shell on the outer wall of the back support ring block in the pressure-shock resistant oil seal back support ring structure, the flexible shell plays a certain buffering effect when it is fitted on the oil seal, and the flexible shell increases the contact surface, so its impact resistance effect is better. Subsequently, reinforcing pads are arranged at the corners of the back support ring block. The reinforcing pads make the back support ring block more supportive, thereby solving the problem of the back support ring being subjected to the impact of the extrusion force. The oil seal will also feel this pressure and may be damaged or the sealing efficiency will be reduced. How to enhance the pressure shock tolerance of the back support ring to protect the oil seal from damage and ensure the reliability and durability of the entire sealing system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a side view structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 4 A is a schematic diagram of the enlarged structure of the utility model;

[0020] Figure 5 It is a schematic diagram of the groove structure of the utility model.

[0021] In the figure: 1. back support ring block; 2. groove; 3. elastic ring; 4. reinforcement pad; 5. flexible shell; 6. buffer pad; 7. arc chamfer. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example: See Figure 1-5 A pressure impact resistant oil seal back-support ring structure shown in the figure includes a back-support ring block 1, a groove 2 is opened on the outer wall of the back-support ring block 1, an elastic ring 3 is arranged on the inner wall of the groove 2, a reinforcing pad 4 is arranged on the outer wall of the back-support ring block 1, a flexible shell 5 is plugged and connected to the outer wall of the back-support ring block 1, a buffer pad 6 is installed on the side wall of the back-support ring block 1, and an arc chamfer 7 is arranged at the corner of the back-support ring block 1.

[0024] In this embodiment, specific reference Figure 1 and Figure 2There are multiple groups of back-supporting ring blocks 1, which are respectively located on the outer wall of the elastic ring 3. The back-supporting ring blocks 1 are arc-shaped block structures. The material of the back-supporting ring blocks 1 is metal material, and the cross-section of the back-supporting ring blocks 1 is an L-shaped structure.

[0025] Among them, the shape and size of the back support ring block 1 are the same, and the parts of the device are modularly designed, and its replacement performance is better. When the device is damaged and needs to be replaced, only the back support ring block 1 needs to be replaced. It is more practical and brings better economic benefits.

[0026] In this embodiment, specific reference Figure 1 , Figure 2 , Figure 3 and Figure 4 The groove 2 is provided at the corner of the back support ring block 1, and the cross-section of the groove 2 is a circular structure. The cross-section of the reinforcing pad 4 is a triangular structure. The reinforcing pad 4 is provided in multiple groups and is respectively located on the outer wall of the back support ring block 1, and the reinforcing pad 4 is located directly above the elastic ring 3. The cross-section of the flexible shell 5 is a concave structure. The flexible shell 5 is provided in multiple groups and is respectively located on the outer wall of the back support ring block 1. The buffer pad 6 is provided in two groups and is respectively located on the opposite side walls of the back support ring block 1. The arc chamfer 7 is provided in multiple groups and is respectively located at the corners of the back support ring block 1, and the arc chamfer 7 is located on one side of the reinforcing pad 4.

[0027] Among them, the groove 2 is an arc-shaped structure, so as to better fit the elastic ring 3 for installation, and the reinforcing pad 4 is a flexible material, so as to better fit the installation position, and the flexible shell 5 can be clamped on the side wall of the back support ring block 1 for fixation.

[0028] When the back-support ring structure of the pressure-shock resistant oil seal of the present scheme is working, a groove 2 is opened on the outer wall of the back-support ring block 1, an elastic ring 3 is arranged on the inner wall of the groove 2, multiple groups of back-support ring blocks 1 are arranged and are respectively located on the outer walls of the elastic rings 3, the back-support ring block 1 is an arc-shaped block structure, the material of the back-support ring block 1 is a metal material, and the cross-section of the back-support ring block 1 is an L-shaped structure. Under the action of the back-support ring block 1, multiple groups of back-support ring blocks 1 are arranged, and each back-support ring block 1 has the same size. It is only necessary to select different numbers of back-support ring blocks 1 according to the size of the pipeline oil seal, and then place the back-support ring block 1 on the installed pipeline, and fix the back-support ring block 1 on the outer wall of the elastic ring 3 through the groove 2, and the elastic ring 3 plays a limiting role. The back-support ring blocks 1 are tightly fitted together, and then the joints of the back-support ring blocks 1 are fitted together to form an annular structure. Under the action of the two groups of buffer pads 6 which are respectively located on the opposite side walls of the back-support ring blocks 1, when the back-support ring blocks 1 are fitted together, the buffer pads 6 are fitted together to play a certain buffering role, and the practicality of the device is better, thereby solving the problem of often needing to customize back-support rings according to specific sizes when facing pipeline systems with different diameters. This means that back-support rings of different specifications are difficult to interchange and use. In production practice, if the existing back-support ring needs to be replaced and spare parts are insufficient, new customization must be carried out, which is not only time-consuming and labor-intensive, but may also cause interruptions in the production process and affect production efficiency.

[0029] A reinforcing pad 4 is provided on the outer wall of the back-support ring block 1, and a flexible shell 5 is plugged and connected to the outer wall of the back-support ring block 1. The cross-section of the flexible shell 5 is a concave structure. The flexible shell 5 is provided in multiple groups and is respectively located on the outer wall of the back-support ring block 1. When the device is installed according to the above principle, the flexible shell 5 is then clamped on the outer wall of the back-support ring block 1, so that the flexible shell 5 has a certain buffering effect when it is fitted on the oil seal, and the flexible shell 5 increases the contact surface, and its impact resistance effect is better. Subsequently, a reinforcing pad 4 is provided at the corner of the back-support ring block 1, and the reinforcing pad 4 makes the back-support ring block 1 more supportive, thereby solving the problem of the back-support ring being subjected to the impact of the extrusion force. The oil seal will also feel this pressure, which may be damaged or reduce the sealing efficiency. How to enhance the pressure shock tolerance of the back-support ring, thereby protecting the oil seal from damage and ensuring the reliability and durability of the entire sealing system.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure impact resistant oil seal backing ring structure, comprising a backing ring block (1), characterized in that: A groove (2) is provided on the outer wall of the back support ring block (1), an elastic ring (3) is provided on the inner wall of the groove (2), a reinforcing pad (4) is provided on the outer wall of the back support ring block (1), a flexible shell (5) is pluggably connected to the outer wall of the back support ring block (1), a buffer pad (6) is installed on the side wall of the back support ring block (1), and an arc chamfer (7) is provided at the corner of the back support ring block (1).

2. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The back-support ring blocks (1) are provided in multiple groups and are respectively located on the outer wall of the elastic ring (3); the back-support ring blocks (1) are arc-shaped block structures.

3. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The back-supporting ring block (1) is made of metal material, and the cross-section of the back-supporting ring block (1) is an L-shaped structure.

4. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The groove (2) is arranged at a corner of the back-supporting ring block (1), and the cross-section of the groove (2) is a circular structure, while the cross-section of the reinforcing pad block (4) is a triangular structure.

5. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The reinforcing pads (4) are provided in multiple groups and are respectively located on the outer wall of the back-supporting ring block (1), and the reinforcing pads (4) are located directly above the elastic ring (3).

6. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The cross section of the flexible shell (5) is a concave structure, and the flexible shell (5) is provided in multiple groups and is respectively located on the outer wall of the back-supporting ring block (1).

7. The pressure impact resistant oil seal back support ring structure according to claim 1, characterized in that: The buffer pads (6) are provided in two groups and are respectively located on opposite side walls of the back-supporting ring block (1); the arc chamfers (7) are provided in multiple groups and are respectively located at the corners of the back-supporting ring block (1); and the arc chamfers (7) are located on one side of the reinforcing pad (4).

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