Elastomeric seal assembly

Abstract

The application provides an elastic sealing assembly, relates to the technical field of sealing, and aims to solve the technical problem that the sealing lip of a spring energy storage sealing ring may be turned outward or broken during actual use, thereby affecting the sealing reliability and sealing performance of the spring energy storage sealing ring. The elastic sealing assembly comprises a flexible sealing sleeve and an elastic piece. The flexible sealing sleeve comprises a body in the shape of a ring, the body is provided with a containing groove along the circumference thereof, and the body forms a first sealing edge and a second sealing edge arranged oppositely. The elastic piece is arranged in the containing groove in a ring shape, the elastic piece is in contact with the first sealing edge and the second sealing edge respectively, and the elastic piece provides a sealing force. At least one first rigid support piece is arranged on the edge of the first sealing edge along the circumference thereof at intervals, and / or at least one second rigid support piece is arranged on the edge of the second sealing edge along the circumference thereof at intervals. The elastic sealing assembly is used for sealing a rotating shaft and a sealing seat.

Description

Technical Field

[0001] This application relates to the field of sealing technology, and in particular to an elastic sealing assembly. Background Technology

[0002] Spring-storage seals are a high-performance elastic sealing structure with broad application prospects in ultra-high temperature, ultra-low temperature, corrosive media, and ultra-high pressure conditions.

[0003] The spring energy storage sealing ring mainly includes a flexible sealing sleeve and a circumferential spring. The flexible sealing sleeve includes a body, which is provided with a receiving groove and forms a first sealing lip and a second sealing lip. The circumferential spring is disposed in the receiving groove and can provide sealing force to the first sealing lip and the second sealing lip.

[0004] However, in actual use, the sealing lip of the spring energy storage seal may turn outward or break, affecting the sealing reliability and sealing performance of the spring energy storage seal. Summary of the Invention

[0005] In view of the above problems, this application provides an elastic sealing component that can reduce the risk of the sealing lip everting or breaking, and improve the sealing reliability and sealing performance of the elastic sealing component.

[0006] To achieve the above objectives, the embodiments of this application provide the following technical solutions:

[0007] A first aspect of this application provides an elastic sealing assembly, including a flexible sealing sleeve and an elastic element; the flexible sealing sleeve includes an annular body, the body having a receiving groove along its circumference and forming a first sealing edge and a second sealing edge disposed opposite to each other; the elastic element is annularly disposed within the receiving groove, the elastic element contacting the first sealing edge and the second sealing edge respectively, and providing a sealing force; at least one first rigid support piece is arranged at intervals along the circumference of the edge of the first sealing edge, and / or at least one second rigid support piece is arranged at intervals along the circumference of the edge of the second sealing edge.

[0008] In one optional embodiment, the edge of the first sealing edge is provided with a first mounting groove, the first mounting groove being located on the outer and / or inner side of the first sealing edge; the first rigid support piece is configured as an arc-shaped piece, which is fixed in the first mounting groove; the first rigid support piece does not contact the sealed body.

[0009] In one alternative embodiment, the first mounting groove covers a portion of the first sealing edge along the depth direction of the receiving groove.

[0010] In one optional embodiment, the edge of the second sealing edge is provided with a second mounting groove, the second mounting groove being located on the outer and / or inner side of the second sealing edge; the second rigid support piece is configured as an arc-shaped piece, which is fixed in the second mounting groove; the second rigid support piece does not contact the sealed body.

[0011] In one alternative embodiment, the second mounting groove covers a portion of the second sealing edge along the depth direction of the receiving groove.

[0012] In one alternative embodiment, the surface of the first rigid support sheet is flush with the surface of the first sealing edge around it; the surface of the second rigid support sheet is flush with the surface of the second sealing edge around it.

[0013] In one optional embodiment, the opening of the first mounting groove extends to the end face of the first sealing edge, and the end face of the first rigid support piece is flush with the end face of the first sealing edge; and / or the opening of the second mounting groove extends to the end face of the second sealing edge, and the end face of the second rigid support piece is flush with the end face of the second sealing edge.

[0014] In one alternative embodiment, the first rigid support plate and the second rigid support plate are configured such that their hardness is greater than that of the flexible sealing sleeve.

[0015] In one alternative embodiment, the first rigid support sheet and the second rigid support sheet are one or a combination of metal sheets, ceramic sheets, and rigid plastic sheets.

[0016] In one alternative embodiment, the elastic element is configured as a circumferential spring, the extension direction of which is consistent with the extension direction of the receiving groove.

[0017] Compared with related technologies, the elastic sealing assembly provided in this application has the following advantages:

[0018] The elastic sealing assembly provided in this application embodiment improves the edge stiffness of the first sealing edge and the second sealing edge by providing a first rigid support piece at the edge of the first sealing edge and a second rigid support piece at the edge of the second sealing edge.

[0019] In related technologies, the stiffness difference between the circumferential spring and the flexible sealing sleeve in spring energy storage seals is relatively large. Under the same external conditions, such as reciprocating or rotating shafts, system vibration, thermal deformation due to high or low temperatures, or during assembly, the lip of the spring energy storage seal is prone to bending and deformation. This causes the inner side of the lip to come into contact with the surface of the sealed body. The friction caused by this contact can stretch the lip, causing it to turn outward or even break, thus leading to the failure of the spring energy storage seal.

[0020] However, the elastic sealing assembly provided in this application embodiment has enhanced rigidity at the edges (lips) of the first sealing edge and the second sealing edge, which can effectively resist edge deformation and outward turning, thereby reducing the risk of deformation and outward turning of the first sealing edge and the second sealing edge.

[0021] Furthermore, multiple rigid support plates are spaced apart along the circumference of the body, meaning that the rigidity of each sealing edge is enhanced in some circumferential areas while remaining flexible in others. This balances the flexibility and deformability of the sealing edge with its rigidity and resistance to overturning, thus improving the rigidity of the flexible sealing sleeve without affecting its sealing performance.

[0022] In addition to the technical problems solved by the embodiments of this disclosure, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by the elastic sealing components provided by the embodiments of this disclosure, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A cross-sectional schematic diagram of the assembly of the elastic sealing component and the sealed body provided in the embodiments of this application;

[0025] Figure 2 This is a schematic diagram showing the arrangement of the first rigid support sheet on the first sealing edge according to an embodiment of this application;

[0026] Figure 3 for Figure 2 Sectional view along line AA;

[0027] Figure 4 Schematic diagram of the arrangement of the second rigid support plate on the second sealing edge according to the embodiments of this application Figure 1 ;

[0028] Figure 5 for Figure 4 Sectional view along the BB direction;

[0029] Figure 6 Schematic diagram of the arrangement of the second rigid support plate on the second sealing edge according to the embodiments of this application Figure 2 ;

[0030] Figure 7 A schematic diagram showing the arrangement of the first rigid support plate and the second rigid support plate on the first sealing edge and the second sealing edge, as provided in the embodiments of this application;

[0031] Figure 8 for Figure 7 Sectional view along the CC direction.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100 - Flexible sealing assembly;

[0034] 10-Flexible sealing sleeve;

[0035] 11-Body; 111-First sealing edge; 112-Second sealing edge; 113-Root; 12-Receiving groove;

[0036] 21-First rigid support plate; 22-Second rigid support plate;

[0037] 30 - Elastic element;

[0038] 200 - Rotating shaft;

[0039] 300-Sealing seat;

[0040] 310 - Mounting cavity. Detailed Implementation

[0041] In practical use, the sealing lip of the spring storage seal ring in related technologies may evert or break, affecting the sealing reliability and performance of the seal. The reason for this problem is:

[0042] In existing spring energy storage seals, the stiffness difference between the circumferential spring and the flexible sealing sleeve is relatively large. Under the same external conditions, such as the reciprocating or rotating shaft, or system vibration, or thermal deformation caused by high or low temperatures, or during assembly, the lip of the spring energy storage seal is prone to bending and deformation. This causes the inner side of the lip to come into contact with the surface of the sealed body. The friction caused by this contact can stretch the lip, causing it to turn outward or even break, thus leading to the failure of the spring energy storage seal.

[0043] To address the aforementioned technical problems, this application provides an elastic sealing assembly, which improves the edge stiffness of the first and second sealing edges by providing a first rigid support piece at the edge of the first sealing edge and a second rigid support piece at the edge of the second sealing edge.

[0044] This design enhances the rigidity of the edges (lips) of the first and second sealing edges, effectively resisting edge deformation and outward turning, thereby reducing the risk of deformation and outward turning of the first and second sealing edges.

[0045] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, 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 a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] like Figure 1 and Figure 2 As shown, the elastic sealing assembly 100 provided in this embodiment can seal a sealed body, which can be a rotating shaft 200 and a sealing seat 300. The elastic sealing assembly 100 can be sleeved on the rotating shaft 200, and the elastic sealing assembly 100 contacts the surfaces of the rotating shaft 200 and the sealing seat 300 respectively to form a sealing structure, that is, the elastic sealing assembly 100 can seal the rotating shaft 200 and the sealing seat 300.

[0047] The elastic sealing assembly 100 includes a flexible sealing sleeve 10 and an elastic element 30, wherein the sealing seat 300 is annular and sleeved on the rotating shaft 200. The sealing seat 300 has a mounting cavity 310, the flexible sealing sleeve 10 is embedded in the mounting cavity 310, and one side of the flexible sealing sleeve 10 contacts and seals the inner wall of the mounting cavity 310; the other side of the flexible sealing sleeve 10 contacts the outer peripheral surface of the rotating shaft 200 and forms a sealing surface.

[0048] A flexible sealing sleeve 10 is fitted onto the outside of the rotating shaft 200. The flexible sealing sleeve 10 includes an annular body 11, which is embedded in the mounting cavity 310. The body 11 has an open receiving groove 12 along its circumference. The receiving groove 12 can be a U-shaped groove or a trapezoidal groove, etc. After the receiving groove 12 is provided, the body 11 forms a root 113 and a first sealing edge 111 and a second sealing edge 112 located on the root 113. The sealing edge can also be called a sealing lip.

[0049] Along the first direction (the depth direction of the receiving groove 12), the opening of the receiving groove 12 is located at the top of the body 11 and opposite to the root 113, where the "root" can be the bottom of the body 11. Along the second direction (the width direction of the receiving groove 12), a first sealing edge 111 and a second sealing edge 112 are respectively provided on both sides of the root 113. The first sealing edge 111 and the second sealing edge 112 are arranged opposite to each other along the second direction and extend circumferentially along the body 11.

[0050] Understandably, the root 113, the first sealing edge 111, and the second sealing edge 112 are configured as the groove wall of the receiving groove 12, that is, the root 113, the first sealing edge 111, and the second sealing edge 112 form a receiving groove 12 with an opening.

[0051] For ease of description of the embodiments of this application, the first sealing edge 111 is defined as contacting the rotating shaft 200 and forming a sealing structure; the second sealing edge 112 contacts the side wall of the mounting cavity 310 and forms a sealing structure, that is, the cavity between the rotating shaft 200 and the sealing seat 300 can be sealed by the flexible sealing sleeve 10.

[0052] Furthermore, the elastic element 30 is circumferentially disposed within the receiving groove 12. The elastic element 30 can be a circumferential spring, and the extending direction of the circumferential spring is consistent with the extending direction of the receiving groove 12. The elastic element 30 can be embedded into the receiving groove 12 through an opening, and the elastic element 30 is in contact with at least the first sealing edge 111 and the second sealing edge 112. The term "contact" can also be understood as the elastic element 30 being partially fitted with the first sealing edge 111 and partially fitted with the second sealing edge 112. Preferably, the elastic element 30 is in contact with the surfaces of the first sealing edge 111, the second sealing edge 112, and the root 113, respectively. This arrangement allows the elastic element 30 to be stably held within the receiving groove 12.

[0053] In this embodiment, the elastic element 30 provides support for the first sealing edge 111 and the second sealing edge 112, so that the flexible sealing sleeve 10 maintains a certain shape and is not easily deformed. At the same time, the first sealing edge 111 is in contact with the surface of the rotating shaft 200, and the second sealing edge 112 is in contact with the inner wall of the mounting cavity 310. That is, the elastic element 30 is in contact with the first sealing edge 111 and the second sealing edge 112 respectively, and provides sealing force to seal the flexible sealing sleeve 10 with the sealed body and form a sealing structure.

[0054] like Figure 2 and Figure 3 As shown, in this embodiment of the application, at least one first rigid support piece 21 is provided at intervals along the circumference of the edge of the first sealing edge 111. Specifically, a first rigid support piece 21 is provided along the circumference of the edge of the first sealing edge 111 (the part of the first sealing edge 111 near the opening of the receiving groove 12, which can also be called the lip). This first rigid support piece 21 can be centrally located; or multiple first rigid support pieces 21 can be provided along the circumference of the edge of the first sealing edge 111, with the multiple first rigid support pieces 21 spaced apart. This embodiment of the application does not limit this.

[0055] For example, in the embodiments of this application, the first rigid support piece 21 may be disposed on the inner side of the first sealing edge 111 facing the receiving groove 12, or the first rigid support piece 21 may be disposed on the outer side of the first sealing edge 111 away from the receiving groove 12, and a portion of the first rigid support piece 21 may be disposed on the inner side of the first sealing edge 111; or a portion of the first rigid support piece 21 may be disposed on the outer side of the first sealing edge 111. The embodiments of this application do not limit this.

[0056] like Figures 4 to 6 As shown, in this embodiment of the application, at least one second rigid support piece 22 is provided at intervals along its circumference on the edge of the second sealing edge 112.

[0057] Specifically, a second rigid support piece 22 is provided circumferentially on the edge of the second sealing edge 112 (the part of the second sealing edge 112 near the opening of the receiving groove 12, which can also be called the lip). This second rigid support piece 22 can be centrally located; or multiple second rigid support pieces 22 are provided circumferentially on the edge of the second sealing edge 112, and the multiple second rigid support pieces 22 are spaced apart. This application embodiment does not limit this.

[0058] For example, in this embodiment, the second rigid support piece 22 may be disposed on the inner side of the second sealing edge 112 facing the receiving groove 12, or the second rigid support piece 22 may be disposed on the outer side of the second sealing edge 112 away from the receiving groove 12, and a portion of the second rigid support piece 22 may be disposed on the inner side of the second sealing edge 112; or a portion of the second rigid support piece 22 may be disposed on the outer side of the second sealing edge 112. This embodiment does not limit this.

[0059] like Figure 7 and Figure 8 As shown, in this embodiment of the application, at least one first rigid support piece 21 is provided at intervals along the circumference of the edge of the first sealing edge 111, and at least one second rigid support piece 22 is provided at intervals along the circumference of the edge of the second sealing edge 112. Exemplarily, the first rigid support piece 21 and the second rigid support piece 22 are arranged opposite to each other along the radial direction of the body, and partially overlap along the radial direction. For specific arrangements, please refer to the above specific embodiments, which will not be repeated here.

[0060] In related technologies, the spring energy storage seal ring has a large difference in stiffness between its circumferential spring and flexible sealing sleeve. Under the same external conditions, such as reciprocating or rotating shafts, system vibration, thermal deformation due to high or low temperatures, or during assembly, the lip of the spring energy storage seal ring is prone to bending and deformation. This causes the inner side of the sealing lip to come into contact with the surface of the sealed body. The friction caused by this contact can stretch the lip, causing it to turn outward or even break, thus leading to the failure of the spring energy storage seal.

[0061] However, the elastic sealing assembly 100 provided in this application embodiment improves the edge stiffness of the first sealing edge 111 and the second sealing edge 112 by providing a first rigid support piece 21 at the edge of the first sealing edge 111 and a second rigid support piece 22 at the edge of the second sealing edge 112, thereby effectively resisting edge deformation and outward turning, and reducing the risk of deformation and outward turning of the first sealing edge 111 and the second sealing edge 112.

[0062] Furthermore, since each sealing edge can be provided with multiple rigid support pieces at intervals, even if the edge (lip) of a local sealing edge is turned outward, a large-scale lip deformation will not occur. For example, if a single rigid support piece is turned outward, it will be restrained and restored by the other rigid support pieces. That is, the synergistic effect between multiple rigid support pieces prevents each sealing edge from turning outward.

[0063] Meanwhile, multiple rigid support plates are spaced apart along the circumference of the body 11, meaning that the rigidity of each sealing edge is enhanced in some circumferential areas while remaining flexible in others. This balances the flexibility and deformability of the sealing edge with its rigidity and resistance to overturning, thus improving the rigidity of the flexible sealing sleeve 10 without affecting its sealing performance.

[0064] Based on the above embodiments, this application embodiment is illustrated by taking as an example that a plurality of first rigid support pieces 21 are provided on the edge of the first sealing edge 111 and the plurality of first rigid support pieces 21 are equally spaced along the circumference of the first sealing edge 111; and a plurality of second rigid support pieces 22 are provided on the edge of the second sealing edge 112 and the plurality of second rigid support pieces 22 are equally spaced along the circumference of the second sealing edge 112.

[0065] In this embodiment, a first mounting groove is provided on the edge of the first sealing edge 111, and the first mounting groove is located on the outer side and / or inner side of the first sealing edge 111. For example, the first mounting groove may be provided on the inner side of the first sealing edge 111 facing the receiving groove 12, or the first mounting groove may be provided on the outer side of the first sealing edge 111 away from the receiving groove 12; and, a portion of the first mounting groove may be provided on the inner side of the first sealing edge 111, and a portion of the first mounting groove may be provided on the outer side of the first sealing edge 111. This embodiment does not limit this.

[0066] The number of first mounting slots is the same as the number of first rigid support plates 21, and each first mounting slot contains one first rigid support plate 21. The first rigid support plate 21 can be a metal plate, a ceramic plate, or a rigid plastic plate, and the hardness of the first rigid support plate 21 is greater than the hardness of the flexible sealing sleeve 10. The first rigid support plate 21 is an arc-shaped plate, which is fixed in the first mounting slot. For example, the first rigid support plate 21 is attached to the wall of the first mounting slot, and the two are bonded together.

[0067] Furthermore, along the depth direction of the receiving groove 12, the first mounting groove covers a partial area of ​​the first sealing edge 111, that is, the first mounting groove extends along the depth direction of the receiving groove 12 and extends to a partial area. This extension position must ensure that when the flexible sealing sleeve 10 seals the sealed body, the first rigid support piece 21 does not contact the sealed body. For example, the first mounting groove extends along the depth direction of the receiving groove 12 to the position between the "lip waist" and the lip opening of the first sealing edge 111.

[0068] It should be noted that, regarding the seal between the flexible sealing sleeve 10 and the sealed body, since the lip of the flexible sealing sleeve 10 basically does not contact the sealed body, its sealing performance is unrelated to the shape of the lip. Its sealing performance is generally related to the lip waist portion, which contacts the sealed body and forms a sealing surface. Therefore, providing an installation groove from the lip to the lip waist of the flexible sealing sleeve 10, and installing a rigid support piece within the installation groove, will not affect the sealing performance of the flexible sealing sleeve 10.

[0069] In this embodiment, a second mounting groove is provided on the edge of the second sealing edge 112, and the second mounting groove is located on the outer side and / or inner side of the second sealing edge 112. For example, the second mounting groove may be provided on the inner side of the second sealing edge 112 facing the receiving groove 12, or the second mounting groove may be provided on the outer side of the second sealing edge 112 away from the receiving groove 12; and, a portion of the second mounting groove may be provided on the inner side of the second sealing edge 112, and a portion of the second mounting groove may be provided on the outer side of the second sealing edge 112. This embodiment does not limit this.

[0070] Furthermore, the number of second mounting slots is the same as the number of second rigid support plates 22, and each second mounting slot is provided with one second rigid support plate 22. For the specific setting position of the second mounting slot on the second sealing edge 112 and the installation method of the second rigid support plate 22 in the second mounting slot, please refer to the setting scheme of the first rigid support plate 21 on the first sealing edge 111, which will not be repeated here.

[0071] Understandably, the second rigid support piece 22 can be made of the same material as the first rigid support piece 21. For example, both the first rigid support piece 21 and the second rigid support piece 22 can be made of metal. Alternatively, the first sealing edge 111 and the second sealing edge 112 of the flexible sealing sleeve 10 can be provided with rigid support pieces made of different materials, such as the first rigid support piece 21 being a metal piece and the second rigid support piece 22 being a ceramic piece, etc.

[0072] Based on the above embodiments, in the embodiments of this application, after the first rigid support piece 21 is installed into the first mounting groove, the surface of the first rigid support piece 21 is flush with the surface of the first sealing edge 111 around it; or, when the second rigid support piece 22 is installed into the second mounting groove, the surface of the second rigid support piece 22 is flush with the surface of the second sealing edge 112 around it.

[0073] Preferably, in this embodiment, the surface of the first rigid support piece 21 is flush with the surface of the first sealing edge 111 around it, and the surface of the second rigid support piece 22 is flush with the surface of the second sealing edge 112 around it. This arrangement ensures that after each rigid support piece is installed in its corresponding mounting groove, the surfaces of the sealing edges are flush, preventing the rigid support pieces from contacting the object being sealed and thus affecting the sealing effect of the flexible sealing sleeve 10.

[0074] Furthermore, in this embodiment, the opening of the first mounting groove extends to the end face of the first sealing edge 111. After the first rigid support piece 21 is installed into the first mounting groove, the end face of the first rigid support piece 21 is flush with the end face of the first sealing edge 111 along the groove depth direction of the receiving groove 12. This arrangement not only facilitates the installation of the first rigid support piece 21 in the first mounting groove, but also ensures the contact area between the first rigid support piece 21 and the first sealing edge 111, thereby improving the edge hardness of the first sealing edge 111.

[0075] And / or, in this embodiment, the opening of the second mounting groove extends to the end face of the second sealing edge 112. After the second rigid support piece 22 is installed into the second mounting groove, the end face of the second rigid support piece 22 is flush with the end face of the second sealing edge 112 along the groove depth direction of the receiving groove 12. This arrangement not only facilitates the installation of the second rigid support piece 22 in the second mounting groove, but also ensures the contact area between the second rigid support piece 22 and the second sealing edge 112, thereby improving the edge hardness of the second sealing edge 112.

[0076] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0077] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0078] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0079] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0080] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A resilient sealing assembly, characterized in that, Including flexible sealing sleeves and elastic components; The flexible sealing sleeve includes an annular body, which has a receiving groove along its circumference and forms a first sealing edge and a second sealing edge disposed opposite to each other. The elastic element is arranged in the receiving groove, and the elastic element contacts the first sealing edge and the second sealing edge respectively, and provides sealing force. At least one first rigid support piece is arranged at a circumferential interval along the edge of the first sealing edge, and / or at least one second rigid support piece is arranged at a circumferential interval along the edge of the second sealing edge. The edge of the first sealing edge is provided with a first mounting groove, which is located on the outer and / or inner side of the first sealing edge; The first rigid support piece is configured as an arc-shaped piece, which is fixed in the first mounting groove, and the first rigid support piece does not contact the sealed body; Along the depth direction of the receiving groove, the first mounting groove covers a partial area of ​​the first sealing edge; The edge of the second sealing edge is provided with a second mounting groove, which is located on the outer and / or inner side of the second sealing edge; The second rigid support piece is configured as an arc-shaped piece, which is fixed in the second mounting groove, and the second rigid support piece does not contact the sealed body.

2. The elastic sealing assembly according to claim 1, characterized in that, Along the depth direction of the receiving groove, the second mounting groove covers a partial area of ​​the second sealing edge.

3. The elastic sealing assembly according to claim 1, characterized in that, The surface of the first rigid support piece is flush with the surface of the first sealing edge around it; The surface of the second rigid support piece is flush with the surface of the second sealing edge around it.

4. The elastic sealing assembly according to claim 3, characterized in that, The opening of the first mounting groove extends to the end face of the first sealing edge, and the end face of the first rigid support piece is flush with the end face of the first sealing edge; and / or The opening of the second mounting groove extends to the end face of the second sealing edge, and the end face of the second rigid support piece is flush with the end face of the second sealing edge.

5. The resilient sealing assembly according to any one of claims 1 to 4, characterized in that, The first rigid support plate and the second rigid support plate are configured such that their hardness is greater than that of the flexible sealing sleeve.

6. The resilient sealing assembly according to claim 5, characterized in that, The first rigid support sheet and the second rigid support sheet are one or a combination of metal sheets, ceramic sheets, and rigid plastic sheets.

7. The elastic sealing assembly according to claim 5, characterized in that, The elastic element is configured as a circumferential spring; The circumferential spring extends in the same direction as the receiving groove.

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