Polytetrafluoroethylene composite sealing ring with embedded metal framework

Abstract

The utility model relates to the technical field of sealing rings, and discloses a polytetrafluoroethylene composite sealing ring of an embedded metal framework, which solves the problem of poor sealing effect of the existing polytetrafluoroethylene composite sealing ring, and comprises a polytetrafluoroethylene composite sealing ring body, the polytetrafluoroethylene composite sealing ring body is composed of a first sealing ring unit, a second sealing ring unit, a metal framework and a polytetrafluoroethylene filling ring, the first sealing ring unit and the second sealing ring unit are of an integrated structure, and the metal framework and the polytetrafluoroethylene filling ring are both connected between the first sealing ring unit and the second sealing ring unit. The first sealing ring unit and the second sealing ring unit are each composed of an annular sealing face, an inner ring body and an outer ring body, the metal framework is installed in the annular installation groove, and the metal framework is composed of a first aluminum alloy ring, a second aluminum alloy ring and a plurality of springs. Through the polytetrafluoroethylene composite sealing ring, the sealing performance can be improved, and the service life can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sealing ring technical field, concretely is a kind of polytetrafluoroethylene composite sealing ring of embedded metal framework. BACKGROUND

[0002] The sealing performance of sealing ring is crucial, the existing polytetrafluoroethylene composite sealing ring is usually a single annular structure, when polytetrafluoroethylene composite sealing ring is connected between two pipelines, if pipeline connection is slightly loose, it can lead to the condition of sealing failure, when polytetrafluoroethylene composite sealing ring slightly ages, it also can affect sealing, to further affect the service life of polytetrafluoroethylene composite sealing ring, therefore, the present application proposes a kind of polytetrafluoroethylene composite sealing ring of embedded metal framework. SUMMARY

[0003] For the above situation, to overcome the defects of prior art, the utility model provides a kind of polytetrafluoroethylene composite sealing ring of embedded metal framework, effectively solve the problem of the poor sealing effect of the existing polytetrafluoroethylene composite sealing ring.

[0004] To achieve the above object, the utility model provides the following technical scheme: a kind of polytetrafluoroethylene composite sealing ring of embedded metal framework, including polytetrafluoroethylene composite sealing ring body, the polytetrafluoroethylene composite sealing ring body is by first sealing ring unit, second sealing ring unit, metal framework and polytetrafluoroethylene filling ring is constituted, first sealing ring unit and second sealing ring unit are integrated structure, metal framework and polytetrafluoroethylene filling ring are connected between first sealing ring unit and second sealing ring unit;

[0005] First sealing ring unit and second sealing ring unit are all by annular sealing surface, inner ring body and outer ring body are constituted, inner ring body and outer ring body are located at the side of annular sealing surface, outer ring body is located at the outside of inner ring body, annular sealing surface and inner ring body and outer ring body form annular installation groove, metal framework is installed in the inside of annular installation groove;

[0006] Metal framework is by first aluminium alloy ring, second aluminium alloy ring and several springs, first aluminium alloy ring is connected in the inside of first sealing ring unit, second aluminium alloy ring is connected in the inside of second sealing ring unit, spring is welded and connected between first aluminium alloy ring and second aluminium alloy ring.

[0007] Preferably, the first sealing ring unit and the second sealing ring unit are integrally injection molded, and a gap is formed between the first sealing ring unit and the second sealing ring unit and located between the two outer ring bodies.

[0008] Preferably, the polytetrafluoroethylene filling ring and the two outer ring bodies are connected by a glue connection structure.

[0009] Preferably, the first sealing ring unit and the second sealing ring unit are fixedly provided with a plurality of annular protruding ribs on the side away from the annular mounting groove.

[0010] Preferably, the annular mounting groove is fixedly provided with a plurality of polytetrafluoroethylene limiting columns, and the first aluminum alloy ring and the second aluminum alloy ring are both provided with a plurality of limiting through holes matched with the polytetrafluoroethylene limiting columns.

[0011] Preferably, the first aluminum alloy ring and the second aluminum alloy ring are both connected with the first sealing ring unit and the second sealing ring unit by a glue connection structure.

[0012] Compared with the prior art, the polytetrafluoroethylene composite sealing ring structure has the following beneficial effects:

[0013] (1) In work, the polytetrafluoroethylene composite sealing ring body composed of the first sealing ring unit, the second sealing ring unit, the metal framework and the polytetrafluoroethylene filling ring can realize the reinforcing and reinforcing effect by the metal framework, and can realize the elastic auxiliary support, thereby improving the sealing performance and service life.

[0014] (2) The annular protruding ribs can further improve the sealing performance of the polytetrafluoroethylene composite sealing ring body at the connection with the pipeline, and the limiting through holes and the polytetrafluoroethylene limiting columns can assist in limiting the first aluminum alloy ring and the second aluminum alloy ring, thereby improving the connection stability of the first aluminum alloy ring and the second aluminum alloy ring. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and explain the principles of the present application, and do not constitute a limitation of the present application.

[0016] In the drawings:

[0017] Fig. 1 It is a structure schematic view of the embedded metal framework polytetrafluoroethylene composite sealing ring of the present application.

[0018] Fig. 2 It is an exploded view of the embedded metal framework polytetrafluoroethylene composite sealing ring of the present application.

[0019] Fig. 3 It is a structure schematic view of the second sealing ring unit of the present application.

[0020] Fig. 4 It is an exploded view of the metal framework of the present application.

[0021] In the figure: 1, polytetrafluoroethylene composite sealing ring body; 2, first sealing ring unit; 3, second sealing ring unit; 4, metal framework; 5, polytetrafluoroethylene filling ring; 6, annular sealing surface; 7, inner ring body; 8, outer ring body; 9, annular mounting groove; 10, first aluminum alloy ring; 11, second aluminum alloy ring; 12, spring; 13, gap; 14, annular convex rib; 15, polytetrafluoroethylene limiting column; 16, limiting through hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to 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 the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] By Figs. 1 to 4 The utility model discloses a polytetrafluoroethylene composite sealing ring of embedded metal framework, including polytetrafluoroethylene composite sealing ring body 1, polytetrafluoroethylene composite sealing ring body 1 is by first sealing ring unit 2, second sealing ring unit 3, metal framework 4 and polytetrafluoroethylene filling ring 5 constitute, first sealing ring unit 2 and second sealing ring unit 3 are integral structure, and metal framework 4 and polytetrafluoroethylene filling ring 5 are all connected between first sealing ring unit 2 and second sealing ring unit 3;

[0024] Metal framework 4 is installed between first sealing ring unit 2 and second sealing ring unit 3, and polytetrafluoroethylene filling ring 5 realizes the sealing of first sealing ring unit 2 and second sealing ring unit 3;

[0025] First sealing ring unit 2 and second sealing ring unit 3 are all formed by annular sealing surface 6, inner ring body 7 and outer ring body 8, and inner ring body 7 and outer ring body 8 are all located on one side of annular sealing surface 6, outer ring body 8 is located at the outside of inner ring body 7, annular sealing surface 6 and inner ring body 7 and outer ring body 8 form annular mounting groove 9, and metal framework 4 is installed in the inside of annular mounting groove 9;

[0026] When pouring into shape, the inner ring body 7 on first sealing ring unit 2 and second sealing ring unit 3 is an integral whole, and the outer ring body 8 on first sealing ring unit 2 and second sealing ring unit 3 is an independent structure. Since the pouring mold will affect the outer ring body 8 during pouring into shape, a gap is formed between the two outer ring bodies 8, and then the gap is filled by the polytetrafluoroethylene filling ring 5 in the later period. When installing the metal framework 4, the two outer ring bodies 8 are unfolded, so that the first sealing ring unit 2 and the second sealing ring unit 3 are deformed, thereby enabling the metal framework 4 to be installed into the inside of the annular mounting groove 9.

[0027] The metal framework 4 is composed of a first aluminum alloy ring 10, a second aluminum alloy ring 11 and a plurality of springs 12, the first aluminum alloy ring 10 is connected to the inside of the first sealing ring unit 2, the second aluminum alloy ring 11 is connected to the inside of the second sealing ring unit 3, and the springs 12 are welded between the first aluminum alloy ring 10 and the second aluminum alloy ring 11;

[0028] The first aluminum alloy ring 10 and the second aluminum alloy ring 11 achieve the effect of reinforcement and reinforcement, and the springs 12 exert elastic pressure on the first aluminum alloy ring 10 and the second aluminum alloy ring 11, thereby improving the sealing performance when connected with the pipeline;

[0029] The first sealing ring unit 2 and the second sealing ring unit 3 are integrally formed by casting, and the gap 13 between the first sealing ring unit 2 and the second sealing ring unit 3 is located between the two outer ring bodies 8, the polytetrafluoroethylene filling ring 5 is connected to the inside of the gap 13, and the gap 13 is filled with the polytetrafluoroethylene filling ring 5, so that the metal framework 4 is closed inside the first sealing ring unit 2 and the second sealing ring unit 3;

[0030] The polytetrafluoroethylene filling ring 5 and the two outer ring bodies 8 are connected by glue, which can improve the connection stability;

[0031] The first sealing ring unit 2 and the second sealing ring unit 3 are fixedly provided with a plurality of annular convex ribs 14 away from the side of the annular mounting groove 9, which can improve the sealing performance of the first sealing ring unit 2 and the second sealing ring unit 3 when connected with the pipeline;

[0032] The annular mounting groove 9 is fixedly provided with a plurality of polytetrafluoroethylene limiting columns 15, and the first aluminum alloy ring 10 and the second aluminum alloy ring 11 are provided with a plurality of limiting through holes 16 matched with the polytetrafluoroethylene limiting columns 15, which can achieve the limiting effect;

[0033] The first aluminum alloy ring 10 and the second aluminum alloy ring 11 are connected to the first sealing ring unit 2 and the second sealing ring unit 3 by glue, which can further improve the connection stability of the first aluminum alloy ring 10 and the second aluminum alloy ring 11 with the first sealing ring unit 2 and the second sealing ring unit 3.

[0034] In work, the polytetrafluoroethylene composite sealing ring body composed of the first sealing ring unit, the second sealing ring unit, the metal framework and the polytetrafluoroethylene filling ring can realize the effect of reinforcement and reinforcement by the metal framework, and can realize elastic auxiliary support, thereby improving the sealing performance and service life; by setting the annular convex rib, the sealing performance of the polytetrafluoroethylene composite sealing ring body at the connection with the pipeline can be further improved, and by setting the limiting through hole and the polytetrafluoroethylene limiting column, the first aluminum alloy ring and the second aluminum alloy ring can be auxiliary limited, and the connection stability of the first aluminum alloy ring and the second aluminum alloy ring can be improved.

Claims

1. An embedded metal skeleton polytetrafluoroethylene composite seal ring comprising a polytetrafluoroethylene composite seal ring body (1), characterized in that: The polytetrafluoroethylene composite sealing ring body (1) is composed of a first sealing ring unit (2), a second sealing ring unit (3), a metal framework (4) and a polytetrafluoroethylene filling ring (5), the first sealing ring unit (2) and the second sealing ring unit (3) are of an integral structure, and the metal framework (4) and the polytetrafluoroethylene filling ring (5) are both connected between the first sealing ring unit (2) and the second sealing ring unit (3). The first sealing ring unit (2) and the second sealing ring unit (3) are both composed of an annular sealing surface (6), an inner ring body (7) and an outer ring body (8), the inner ring body (7) and the outer ring body (8) are both located on one side of the annular sealing surface (6), the outer ring body (8) is located outside the inner ring body (7), the annular sealing surface (6), the inner ring body (7) and the outer ring body (8) form an annular mounting groove (9), and the metal framework (4) is mounted inside the annular mounting groove (9). The metal framework (4) is composed of a first aluminum alloy ring (10), a second aluminum alloy ring (11) and a plurality of springs (12), the first aluminum alloy ring (10) is connected inside the first sealing ring unit (2), the second aluminum alloy ring (11) is connected inside the second sealing ring unit (3), and the springs (12) are welded and connected between the first aluminum alloy ring (10) and the second aluminum alloy ring (11).

2. The embedded metal skeleton PTFE composite seal ring according to claim 1, characterized in that: The first sealing ring unit (2) and the second sealing ring unit (3) are of an integral casting structure, and a gap (13) between the two outer ring bodies (8) is formed between the first sealing ring unit (2) and the second sealing ring unit (3), and the polytetrafluoroethylene filling ring (5) is connected inside the gap (13).

3. The embedded metal skeleton PTFE composite seal ring according to claim 1, wherein: The polytetrafluoroethylene filling ring (5) and the two outer ring bodies (8) are both of a glue connection structure.

4. The embedded metal skeleton PTFE composite seal ring according to claim 1, characterized in that: The first sealing ring unit (2) and the second sealing ring unit (3) are both fixedly provided with a plurality of annular convex ribs (14) on the side away from the annular mounting groove (9).

5. The embedded metal skeleton PTFE composite seal ring according to claim 1, wherein: A plurality of polytetrafluoroethylene limiting columns (15) are fixedly arranged inside the annular mounting groove (9), and a plurality of limiting through holes (16) matched with the polytetrafluoroethylene limiting columns (15) are formed on the first aluminum alloy ring (10) and the second aluminum alloy ring (11).

6. The embedded metal skeleton PTFE composite seal ring of claim 1, wherein: The first aluminum alloy ring (10) and the second aluminum alloy ring (11) and the first sealing ring unit (2) and the second sealing ring unit (3) are both of a glue connection structure.

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