End face combined sealing element capable of compensating axial dynamic clearance

Abstract

The utility model relates to the technical field of sealing elements, and discloses an end face combined sealing element capable of compensating an axial dynamic clearance, which comprises a to-be-assembled element and a groove formed in the surface of the to-be-assembled element. According to the end face combined sealing element capable of compensating the axial dynamic clearance, through an elastic combined structure of the rubber body and the spring, the sealing interference can be greatly increased, so that the axial clearance change generated by hardware movement is effectively compensated, and the design ensures that the axial dynamic clearance can be compensated under different working conditions. The sealing element can keep stable compression amount, the problem of sealing leakage caused by gap change is avoided, the sealing performance and the operation stability of mechanical equipment are remarkably improved, the T-shaped sealing ring is made of the PTFE material, the abrasion resistance of the sealing element is remarkably improved, the PTFE material is excellent in corrosion resistance, high-temperature resistance and low friction coefficient, and the sealing performance of the sealing element is greatly improved. And the stable sealing performance can be kept in a severe working environment, and meanwhile, the frictional wear between the sealing ring and a matching part is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of sealing technology, specifically to an end face combination seal for compensating for axial dynamic clearance. Background Technology

[0002] In current industrial applications, end face seals are widely used as key components in various mechanical equipment to prevent fluid or gas leakage. Traditional end face seals can be mainly divided into two categories: one is seals based on elastomeric materials, such as O-rings, rectangular rings, or flat washers; the other is spring-loaded seals that combine PTFE material with metal springs. These seals exhibit good sealing performance in static sealing conditions. Their working principle is mainly to place the seal in a flat circular groove, and through the pressing action of the other side plane, the seal ring is compressed and deformed, thereby achieving the purpose of sealing.

[0003] However, in practical applications, the hardware components in many mechanical devices are not always stationary. When these hardware components move, especially when the axial clearance changes dynamically, traditional end face seals will face challenges. Due to the change in axial clearance caused by the movement, the compression of the seal will decrease accordingly, thereby reducing the sealing effect and even potentially causing seal leakage.

[0004] In addition, existing end-face sealing products are prone to wear problems when there is relative movement between two hardware components. Due to the friction, the surface of the seal will gradually wear down, resulting in a decrease in sealing performance and potentially causing leakage problems. This wear problem is particularly prominent in some mechanical equipment that needs to operate for a long time or bear heavy loads. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides an end-face combination seal for compensating for axial dynamic clearance, which has advantages such as reduced wear and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: an end face combination seal for compensating axial dynamic clearance, comprising a component to be installed and a groove formed on the surface of the component to be installed, wherein the inner bottom wall of the groove contacts a rubber body, and a set of first springs and second springs are provided inside both sides of the rubber body.

[0007] The inner bottom wall of the rubber body is in contact with hardware, and a T-shaped sealing ring is provided between the left and right inner side walls of the top of the rubber body;

[0008] The top of the T-shaped sealing ring is higher than the top of the part to be installed, and the upper surface of the T-shaped sealing ring contacts a mating part, with a gap between the mating part and the part to be installed.

[0009] Through the above-described solution, the elastic combination structure of the rubber body and spring significantly increases the sealing interference, thereby effectively compensating for axial clearance changes caused by hardware movement. This design ensures that the seal maintains a stable compression under different working conditions, avoiding sealing leakage problems caused by clearance changes, and significantly improving the sealing performance and operational stability of mechanical equipment. The T-shaped sealing ring made of PTFE material significantly improves the wear resistance of the seal. With its excellent corrosion resistance, high temperature resistance, and low coefficient of friction, PTFE material can maintain stable sealing performance in harsh working environments, while greatly reducing friction and wear between the seal and mating parts. Compared with traditional rubber seals, this seal has a longer service life, reduces replacement frequency and maintenance costs, and improves the overall economy and reliability of mechanical equipment.

[0010] Furthermore, each of the first springs is arranged vertically, and each of the second springs is arranged horizontally.

[0011] The above scheme and settings can improve the horizontal and vertical reset performance of the rubber body.

[0012] Furthermore, each of the first and second springs is vulcanized and embedded in the rubber body.

[0013] The above solution ensures a tight bond between the first and second springs and the rubber body, preventing them from easily detaching, while also guaranteeing that the elastic properties of the springs are effectively utilized.

[0014] Furthermore, the T-shaped sealing ring is vulcanized and bonded to the rubber body.

[0015] The above solution achieves a firm connection between the two, improves sealing performance, and prevents the sealing ring from loosening or falling off under high pressure or dynamic environments.

[0016] Furthermore, the gap between the mating component and the component to be installed is adjustable.

[0017] The above solutions are designed to meet different axial dynamic clearance compensation requirements.

[0018] Furthermore, the inner bottom wall of the rubber body is arc-shaped and compatible with the hardware.

[0019] The above solution can increase the contact area with the hardware, thereby enhancing the sealing effect and stability.

[0020] Furthermore, the bottom of the T-shaped sealing ring is an arc shape adapted to the hardware, and the bottom of the T-shaped sealing ring is in contact with the surface of the hardware.

[0021] The above solution and settings can increase the contact area with the hardware and ensure a tight seal.

[0022] Furthermore, the T-shaped sealing ring is made of PTFE.

[0023] Through the above solutions, PTFE material exhibits excellent corrosion resistance, high temperature resistance, and low coefficient of friction, enabling it to maintain stable sealing performance in harsh working environments while reducing friction and wear between the material and mating parts, thus extending the service life of the seals.

[0024] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0025] This is an end-face combination seal for compensating for axial dynamic clearance. Through the elastic combination structure of a rubber body and a spring, this seal can significantly increase the sealing interference, thereby effectively compensating for axial clearance changes caused by hardware movement. This design ensures that the seal maintains a stable compression under different working conditions, avoiding sealing leakage problems caused by clearance changes, and significantly improving the sealing performance and operational stability of mechanical equipment. The T-shaped sealing ring made of PTFE material significantly improves the wear resistance of the seal. With its excellent corrosion resistance, high temperature resistance and low coefficient of friction, PTFE material can maintain stable sealing performance in harsh working environments, while greatly reducing friction and wear between the seal and mating parts. Compared with traditional rubber seals, this seal has a longer service life, reduces replacement frequency and maintenance costs, and improves the overall economy and reliability of mechanical equipment. Attached Figure Description

[0026] Figure 1 This is a diagram illustrating the overall structure of this application;

[0027] Figure 2 This is a structural diagram of the rubber body in this application;

[0028] Figure 3 This is a cross-sectional view of the rubber body structure of this application;

[0029] Figure 4 This is a structural diagram of the T-type sealing ring of this application.

[0030] In the picture:

[0031] 1. Component to be installed; 101. Groove; 2. Rubber body; 201. First spring; 202. Second spring; 3. Hardware; 4. T-shaped sealing ring; 5. Gap; 6. Mating parts. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, an end face combination seal for compensating axial dynamic clearance includes a component 1 to be installed and a groove 101 opened on the surface of the component 1. The inner bottom wall of the groove 101 contacts a rubber body 2. A set of first springs 201 and second springs 202 are provided inside both sides of the rubber body 2. By setting the first springs 201 and second springs 202, the reset performance of the rubber body 2 can be improved.

[0034] Please see Figure 1 , Figure 2 and Figure 3 Each first spring 201 is vertically arranged, and each second spring 202 is horizontally arranged. This arrangement improves the horizontal and vertical reset performance of the rubber body 2. The inner bottom wall of the rubber body 2 is in contact with hardware 3, and a T-shaped sealing ring 4 is provided between the left and right inner side walls of the top of the rubber body 2. Each first spring 201 and second spring 202 is vulcanized and embedded in the rubber body 2 to ensure that the first spring 201 and second spring 202 are tightly bonded to the rubber body 2 and are not easy to fall off, while ensuring that the elasticity of the spring is effectively utilized.

[0035] Please see Figure 1 , Figure 2 and Figure 4 The T-shaped sealing ring 4 is vulcanized and bonded to the rubber body 2, achieving a firm connection between the two, improving sealing performance, and preventing the sealing ring from loosening or falling off under high pressure or dynamic environment. The top of the T-shaped sealing ring 4 is higher than the top of the part to be installed 1. The upper surface of the T-shaped sealing ring 4 contacts the mating part 6. There is a gap 5 between the mating part 6 and the part to be installed 1. The size of the gap 5 between the mating part 6 and the part to be installed 1 is adjustable to adapt to different axial dynamic gap compensation requirements. The inner bottom wall of the rubber body 2 is arc-shaped and adapted to the hardware 3, which can increase the contact area with the hardware 3, thereby enhancing the sealing effect and stability.

[0036] Please see Figure 1 , Figure 2 and Figure 4The bottom of the T-shaped sealing ring 4 is an arc shape that matches the hardware 3, and the bottom of the T-shaped sealing ring 4 is in contact with the surface of the hardware 3. This design increases the contact area with the hardware 3 and ensures a tight seal. The T-shaped sealing ring 4 is made of PTFE, which has excellent corrosion resistance, high temperature resistance and low coefficient of friction. It can maintain stable sealing performance in harsh working environments, while reducing friction and wear between the sealing ring and the mating part 6 and extending the service life of the seal.

[0037] This embodiment presents an end-face combination seal for compensating for axial dynamic clearance. Through the elastic combination structure of rubber body 2 and spring, this seal can significantly increase the sealing interference, thereby effectively compensating for the change in axial clearance 5 caused by the movement of hardware 3. This design ensures that the seal maintains a stable compression under different working conditions, avoiding sealing leakage problems caused by changes in clearance 5, and significantly improving the sealing performance and operational stability of mechanical equipment. The T-shaped sealing ring 4 is made of PTFE material, which significantly improves the wear resistance of the seal. With its excellent corrosion resistance, high temperature resistance and low coefficient of friction, PTFE material can maintain stable sealing performance in harsh working environments, while greatly reducing friction and wear between the seal and mating parts 6. Compared with traditional rubber seals, this seal has a longer service life, reduces replacement frequency and maintenance costs, and improves the overall economy and reliability of mechanical equipment.

[0038] The working principle of the above embodiment is as follows: The seal is first installed in the groove 101 of the component to be installed 1. Then, it is locked in the groove 101 by the pressing action of the mating component 6. During this process, the T-shaped sealing ring 4 is compressed and pushes the rubber body 2 to deform. The deformation of the rubber body 2 generates elastic stress, which is applied to the T-shaped sealing ring 4, making it fit tightly against the bottom of the mating component 6 to form a preliminary sealing structure. When the hardware 3 and the mating component 6 move in the axial direction, the axial clearance 5 changes. At this time, the first spring 201 and the second spring 202 in the rubber body 2 begin to function, providing elastic compensation. An elastic force is applied to the T-shaped sealing ring 4 and the rubber body 2. This elastic force allows the rubber body 2 and the T-shaped sealing ring 4 to expand accordingly as the axial clearance 5 increases, thereby maintaining close contact with the mating part 6 and ensuring the stability of the sealing performance. When the hardware 3 and the mating part 6 move relative to each other in the horizontal direction, the material of the T-shaped sealing ring 4, PTFE, demonstrates its excellent frictional properties. The low coefficient of friction of PTFE reduces frictional wear between it and the mating part 6, extending the service life of the seal. At the same time, the elastic structure of the rubber body 2 and the spring can also absorb and disperse the impact force brought by the movement to a certain extent, further protecting the seal from damage.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0040] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An end-face combination seal for compensating axial dynamic clearance, comprising a component to be installed (1) and a groove (101) formed on the surface of the component to be installed (1), characterized in that: The inner bottom wall of the groove (101) is in contact with a rubber body (2), and a set of first spring (201) and second spring (202) are provided on both sides of the rubber body (2). The inner bottom wall of the rubber body (2) is in contact with hardware (3), and a T-shaped sealing ring (4) is provided between the left and right inner side walls of the top of the rubber body (2). The top of the T-shaped sealing ring (4) is higher than the top of the part to be installed (1), and the upper surface of the T-shaped sealing ring (4) is in contact with the mating part (6). There is a gap (5) between the mating part (6) and the part to be installed (1).

2. The end face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: Each of the first springs (201) is arranged vertically, and each of the second springs (202) is arranged horizontally.

3. The end face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: Each of the first spring (201) and the second spring (202) is vulcanized and embedded with the rubber body (2).

4. The end face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: The T-shaped sealing ring (4) is vulcanized and bonded to the rubber body (2).

5. An end-face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: The gap (5) between the mating part (6) and the part to be installed (1) is adjustable.

6. An end-face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: The inner bottom wall of the rubber body (2) is arc-shaped and is compatible with the hardware (3).

7. An end-face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: The bottom of the T-shaped sealing ring (4) is an arc shape that is compatible with the hardware (3), and the bottom of the T-shaped sealing ring (4) is in contact with the surface of the hardware (3).

8. An end-face combination seal for compensating axial dynamic clearance according to claim 1, characterized in that: The T-shaped sealing ring (4) is made of PTFE.

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