Multi-layer sealing surface type rubber sealing ring

Abstract

The utility model discloses a multi-layer sealing surface type rubber sealing ring which comprises a sealing ring body, the sealing ring body comprises an inner rubber ring and an outer rubber ring, a plurality of supporting frameworks are arranged at the joint of the inner rubber ring and the outer rubber ring, and an extrusion groove body is arranged on the inner rubber ring. The sealing ring has the advantages that a combined structure of the inner rubber ring, the outer rubber ring, the locking ring, the supporting framework and the extrusion groove body is adopted, a plurality of sealing faces are arranged to achieve the multi-face sealing effect on the inner sides, the outer sides and ports of the pipeline socket piece and the pipeline spigot piece respectively, displacement of the sealing ring during assembly is prevented, the sealing effect is guaranteed, and installation is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of rubber sealing rings, in particular to a multi-layer sealing surface type rubber sealing ring. Background Art

[0002] The socket connection is often used in pipeline installation. The socket connection is a structure that uses a sealing ring to seal the pipe socket and the pipe spigot.

[0003] When the pipe spigot is inserted into the pipe socket, the sealing ring will be slightly displaced due to the extrusion force during insertion. Once displacement occurs, it will affect the sealing effect and even cause the sealing ring to crack, deform and other adverse phenomena. Traditional sealing rings generally have the problem of poor sealing effect if the hardness is too high and easy to fall off if the hardness is too low. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-layer sealing surface type rubber sealing ring to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The utility model provides a multi-layer sealing surface type rubber sealing ring, comprising a sealing ring body, wherein the sealing ring body comprises an inner rubber ring and an outer rubber ring, a plurality of supporting frames are arranged at the connection between the inner rubber ring and the outer rubber ring, and an extrusion groove is arranged on the inner rubber ring.

[0007] Furthermore, the inner rubber ring includes an inner ring body, a first sealing surface and a second sealing surface.

[0008] Furthermore, the outer rubber ring includes an outer ring body, a third sealing surface and a fourth sealing surface, and a circular transition is formed between the first sealing surface and the third sealing surface.

[0009] Furthermore, the plurality of support frames are respectively connected to the first sealing surface and the third sealing surface, one end of the support frame is connected to the extrusion slot body, and the height of the support frame is smaller than the height of the extrusion slot body.

[0010] Furthermore, the extrusion groove body is arranged on the first sealing surface, and the extrusion groove body includes a plurality of extrusion strips arranged at equal distances, and an extrusion groove is provided between the plurality of extrusion strips, and the extrusion groove is a U-shaped groove.

[0011] Furthermore, a locking ring is provided at one end of the inner rubber ring away from the outer rubber ring, and the inner rubber ring and the inner side of the locking ring have an inclination angle, and the inclination angle is greater than 90 degrees.

[0012] Furthermore, the outer rubber ring is conical, and the length direction of the outer rubber ring is smaller than the length direction of the inner rubber ring.

[0013] Beneficial effects: A multi-layer sealing surface type rubber sealing ring, which adopts a combined structure of an inner rubber ring, an outer rubber ring, a locking ring, a support frame and an extrusion trough body, has multiple sealing surfaces to respectively achieve multiple-surface sealing effects on the inner side, outer side and port of the pipe socket and the pipe plug, preventing the sealing ring from shifting during assembly, ensuring the sealing effect and facilitating installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the overall structure of the utility model from another angle;

[0016] Figure 3 It is a partial structural sectional view of the utility model.

[0017] Reference numerals

[0018] 1-inner rubber ring, 11-inner ring body, 12-first sealing surface, 13-second sealing surface, 2-outer rubber ring, 21-outer ring body, 22-third sealing surface, 23-fourth sealing surface, 3-support frame, 4-extrusion groove body, 41-extrusion strip, 42-extrusion groove, 5-locking ring, 6-inclination angle. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] Example

[0021] like Figure 1-3 As shown, a multi-layer sealing surface type rubber sealing ring includes a sealing ring body, the sealing ring body includes an inner rubber ring 1 and an outer rubber ring 2, a plurality of supporting frames 3 are provided at the connection between the inner rubber ring 1 and the outer rubber ring 2, and an extrusion groove body 4 is provided on the inner rubber ring 1.

[0022] The inner rubber ring 1 comprises an inner ring body 11, a first sealing surface 12 and a second sealing surface 13. The first sealing surface 12 corresponds to the inner wall of the pipe socket, and the second sealing surface 13 corresponds to the outer wall of the pipe spigot.

[0023] The outer rubber ring 2 includes an outer ring body 21, a third sealing surface 22 and a fourth sealing surface 23. There is a circular transition between the first sealing surface 12 and the third sealing surface 22. The third sealing surface 22 and the fourth sealing surface 23 correspond to the socket ends of the pipe socket respectively.

[0024] Multiple support skeletons 3 are respectively connected to the first sealing surface 12 and the third sealing surface 22. One end of the support skeleton 3 is connected to the extrusion groove body 4. The height of the support skeleton 3 is less than the height of the extrusion groove body 4. The support skeleton 3 is arranged between the first sealing surface 12 and the third sealing surface 22. After the pipeline is assembled, extrusion pressure is generated when the pipeline plug and the pipeline socket are inserted into each other, and the outer rubber ring 2 is flipped toward the socket end. The supporting force is strengthened by the support skeleton 3, and the friction force of the flipped outer rubber ring 2 is further enhanced to prevent the outer rubber ring 2 from deforming while avoiding the movement of the inner ring 1.

[0025] The extrusion groove body 4 is arranged on the first sealing surface 12, and the extrusion groove body 4 includes a plurality of extrusion strips 41 arranged at equal distances, and an extrusion groove 42 is provided between the plurality of extrusion strips 41, and the extrusion groove 42 is a U-shaped groove. The extrusion groove body 4 is an outward convex structure and is integrally formed with the inner rubber ring 1. The friction between the first sealing surface 11 and the inner wall of the pipe socket is increased by the extrusion groove body 4 to prevent the inner rubber ring 1 from moving during assembly.

[0026] A locking ring 5 is provided at one end of the inner rubber ring 1 away from the outer rubber ring 2. The inner rubber ring 1 and the inner side of the locking ring 5 have an inclination angle 6, and the inclination angle 6 is greater than 90 degrees. The locking ring 5 is inclined toward the inside of the inner rubber ring 1 to seal the edge of the pipe socket.

[0027] In the utility model, when the pipe spigot and the pipe socket are assembled with each other, the extrusion force generated inside and outside during insertion causes the outer rubber ring 2 to flip outward and fit the pipe socket port, and the friction force is generated by the extrusion groove 4 on the inner rubber ring 1 to prevent the inner rubber ring 1 from being displaced until it is assembled in place, and the outer rubber ring 2 and the locking ring 5 are used to seal the butt end of the pipe spigot and the pipe socket, as well as the end of the pipe spigot and the inner rubber ring 1, respectively.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the utility model content within the protection scope of the utility model.

Claims

1. A multi-layer sealing surface type rubber sealing ring, comprising a sealing ring body, characterized in that: The sealing ring body comprises an inner rubber ring (1) and an outer rubber ring (2); a plurality of support frames (3) are provided at the connection between the inner rubber ring (1) and the outer rubber ring (2); and an extrusion groove (4) is provided on the inner rubber ring (1).

2. The multi-layer sealing surface type rubber sealing ring according to claim 1, characterized in that: The inner rubber ring (1) comprises an inner ring body (11), a first sealing surface (12) and a second sealing surface (13).

3. The multi-layer sealing surface type rubber sealing ring according to claim 2, characterized in that: The outer rubber ring (2) comprises an outer ring body (21), a third sealing surface (22) and a fourth sealing surface (23), and a circular transition is formed between the first sealing surface (12) and the third sealing surface (22).

4. The multi-layer sealing surface type rubber sealing ring according to claim 3, characterized in that: The plurality of support frames (3) are respectively connected to the first sealing surface (12) and the third sealing surface (22); one end of the support frame (3) is connected to the extrusion trough body (4); and the height of the support frame (3) is smaller than the height of the extrusion trough body (4).

5. The multi-layer sealing surface type rubber sealing ring according to claim 4, characterized in that: The extrusion groove body (4) is arranged on the first sealing surface (12), and the extrusion groove body (4) comprises a plurality of extrusion strips (41) arranged at equal distances, and an extrusion groove (42) is provided between the plurality of extrusion strips (41), and the extrusion groove (42) is a U-shaped groove.

6. The multi-layer sealing surface type rubber sealing ring according to claim 1, characterized in that: A locking ring (5) is provided at one end of the inner rubber ring (1) away from the outer rubber ring (2), and the inner rubber ring (1) and the inner side of the locking ring (5) have an inclination angle (6), and the inclination angle (6) is greater than 90 degrees.

7. The multi-layer sealing surface type rubber sealing ring according to claim 1, characterized in that: The outer rubber ring (2) is conical, and the length direction of the outer rubber ring (2) is smaller than the length direction of the inner rubber ring.

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