CN210423709U

CN210423709U - Internal expanding rubber sealing ring

Info

Publication number: CN210423709U
Application number: CN201920872059.8U
Authority: CN
Inventors: 渠向江
Original assignee: Tianjin Jihua Rubber Products Co ltd
Current assignee: Tianjin Jihua Rubber Products Co ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-04-28
Anticipated expiration: 2029-06-12

Abstract

The application discloses an internal expansion type rubber sealing ring, which comprises an annular rubber ring body arranged at a joint gap in a pipeline; an annular steel ring groove is arranged in the rubber ring body along the circumferential direction; the inner surface of the rubber ring body is provided with a mounting notch; the mounting notch is communicated with the steel ring groove; an inner expansion steel ring matched with the steel ring groove is arranged in the steel ring groove; one part of the inner expansion steel ring body is disconnected to form an expansion opening; the expansion opening is arranged at the mounting opening; a plurality of supporting mechanisms are uniformly supported and arranged on the inner expansion steel ring at the expansion opening; sealing glue is filled in the mounting groove opening of the well-mounted supporting mechanism; the edges of two sides of the outer ring wall of the inner expansion steel ring are protruded along the annular direction to form a first expansion convex ring. The utility model discloses a rubber seal installs construction simply, and reduction of erection time practices thrift the cost, and sealing performance is good.

Description

Internal expanding rubber sealing ring

Technical Field

The present disclosure relates generally to the field of rubber fitting technology, and more particularly, to an inner expanding rubber seal ring.

Background

In the construction of pipeline networks in cities, as the service life of pipelines is very long, a plurality of pipelines are laid decades ago, and as the technical level, the construction cost and other reasons exist at that time, a bad rubber ring or a common rubber ring is used in an embedded prestressed concrete pipe or a steel cylinder concrete water conveying pipeline, the joints of the pipelines can be leaked after being used for many years, and in order to block leakage, the traditional construction method is to excavate the pipelines and replace failed sealing rings.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide an inner expansion type rubber seal ring which is simple in construction, short in construction period, low in cost and good in sealing performance.

The utility model provides an internal expanding rubber sealing ring, which comprises an annular rubber ring body arranged at the joint gap in a pipeline; an annular steel ring groove is arranged in the rubber ring body along the circumferential direction; the inner surface of the rubber ring body is provided with a mounting notch; the mounting notch is communicated with the steel ring groove;

an inner expansion steel ring matched with the steel ring groove is arranged in the steel ring groove; one part of the inner expansion steel ring body is disconnected to form an expansion opening; the expansion opening is arranged at the mounting opening; a plurality of supporting mechanisms are uniformly supported and arranged on the inner expansion steel ring at the expansion opening; sealing glue is filled in the mounting groove opening of the well-mounted supporting mechanism;

the edges of the two sides of the outer ring wall of the inner expansion steel ring are both protruded along the ring direction to form a first expansion convex ring; the two circles of first expansion convex rings are respectively positioned at two sides of the connecting gap in the pipeline.

Preferably, the support mechanism comprises an arc-shaped support rod; the arc shape of the supporting rod is matched with the arc shape of the inner expansion steel ring; the two ends of the supporting rod are integrally provided with clamping joints; one end of the clamping joint far away from the supporting rod is provided with a clamping interface; the thickness of the clamping interface is larger than the wall thickness of the inner expansion steel ring.

Preferably, the outer ring wall of the inner steel expansion ring is respectively positioned between the two rings of the first expansion convex rings and the connection gaps in the pipeline, and the second expansion convex rings are formed by protruding.

Preferably, the two sides of the rubber ring body are integrally provided with annular bearing edges; the outer wall of the bearing edge is arranged close to the inner wall of the pipeline; the thickness of the bearing edge is gradually reduced from one side close to the rubber ring body to one side far away from the rubber ring body.

Preferably, the sealing glue is waterproof glue.

Compared with the prior art, the beneficial effects of this application are:

the internally-expanded rubber sealing ring comprises a rubber ring body, an internally-expanded steel ring is arranged in the rubber ring body, an expansion opening is formed in the internally-expanded steel ring, the internally-expanded steel ring is tightly supported by an expander, a supporting mechanism is clamped at the expansion opening, the rubber ring body is tightly supported, the mounting construction of the rubber sealing ring is simple, the construction period is shortened, and the cost is saved;

after the supporting mechanism is installed, the mounting notch is sealed by using sealing compound, so that the inner expanding steel ring is in a full-sealing state, the inner expanding steel ring is not easy to rust and corrode, and the service life of the rubber sealing ring is prolonged;

the first expansion convex ring and the second expansion convex ring which are positioned on two sides of the joint gap in the pipeline perform double-layer expansion sealing on the gap, and the sealing performance is good.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural view of an axial cross section of an installed internal expansion rubber seal ring according to an embodiment of the present disclosure;

FIG. 2 is a schematic axial sectional structure view of the inner expanding rubber sealing ring;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 4 is a schematic structural diagram of the support mechanism.

Reference numbers in the figures: 11. a joint gap in the pipe; 12. a rubber ring body; 13. an internal expansion steel ring; 14. a support mechanism;

21. a steel ring groove; 22. installing a notch; 23. carrying and connecting edges;

31. an expansion opening; 32. a first expansion convex ring; 33. a second expansion convex ring;

41. a support bar; 42. a clamping head; 43. a card interface.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 to 4, an embodiment of the present application provides an inner expanding rubber seal ring, including an annular rubber ring body 12 disposed at a joint gap 11 in a pipe; an annular steel ring groove 21 is arranged in the rubber ring body 12 along the annular direction; the inner surface of the rubber ring body 12 is provided with a mounting notch 22; the mounting notch 22 is communicated with the steel ring groove 21;

an inner expansion steel ring 13 matched with the steel ring groove 21 is arranged in the steel ring groove 21, and the inner expansion steel ring 13 expands the rubber ring body 12 to be tightly attached to the joint gap 11 in the pipeline; one part of the inner expansion steel ring 13 is disconnected to form an expansion opening 31; the expansion opening 31 is arranged at the mounting notch 22, and the inner expansion ring 13 can be expanded by expanding the expansion opening 31; a plurality of supporting mechanisms 14 are uniformly supported on the inner expansion steel ring 13 at the expansion opening 31; the sealing glue is filled in the mounting notch 22 of the mounted supporting mechanism 14, and the steel ring groove 21 is sealed, so that the inner expansion steel ring 13 is in a sealed state;

the edges of the two sides of the outer ring wall of the inner steel expansion ring 13 are both protruded along the ring direction to form a first expansion convex ring 32; two circles of first expansion convex rings 32 are respectively positioned at two sides of the connecting gap 11 in the pipeline. The arrangement of the first expansion convex ring 32 enables the sealing effect of the rubber ring body 12 on the joint gap 11 in the pipeline to be better.

The utility model discloses an installation:

firstly, place rubber ring body 12 along the circumference of the joining clearance 11 department in the pipeline, then, utilize the expander to expand opening 31 and enlarge, with the even joint of a plurality of supporting mechanism 14 in expansion opening 31 department, loosen the expander again, the expansion opening 31 of interior steel ring 13 is with supporting mechanism 14 chucking, will seal again and glue and fill in installation notch 22, will install notch 22 and seal, accomplish rubber seal's installation, the construction is simple, and is sealed effectual.

In a preferred embodiment, the support mechanism 14 includes an arcuate support bar 41; the arc of the support rod 41 is matched with the arc of the inner expansion steel ring 13, so that the support effect of the support rod 41 is better, and meanwhile, the support rod 41 can expand the rubber ring body 12 at the expansion opening 31 to enhance the sealing effect; the two ends of the support rod 41 are integrally provided with clamping joints 42; one end of the clamping joint 42 away from the supporting rod 41 is provided with a clamping interface 43; the thickness of the clamping interface 43 is larger than the wall thickness of the inner steel expansion ring 13, so that the clamping interface 43 can be clamped at the expansion opening 31 of the inner steel expansion ring 13.

In a preferred embodiment, the outer ring wall of the inner expansion ring 13 is respectively located between two rings of the first expansion convex ring 32 and the joining gap 11 in the pipeline, and the second expansion convex ring 33 is formed by protruding, and the second expansion convex ring 33 forms a second expansion sealing ring, so that the sealing effect is enhanced.

In a preferred embodiment, the two sides of the rubber ring body 12 are integrally provided with annular receiving edges 23; the outer wall of the bearing edge 23 is arranged close to the inner wall of the pipeline; the thickness of the receiving edge 23 gradually decreases from the side close to the rubber gasket body 12 to the side far away from the rubber gasket body 12. The bearing edge 23 reduces the impact force of water flow in the pipeline on the rubber ring body 12, and simultaneously reduces the influence of the rubber ring body 12 on the water flow.

In a preferred embodiment, the sealing glue is waterproof glue, and the waterproof glue has high flexibility, water resistance, moisture insulation, strong bonding force, strong cracking resistance, water tightness, simple and convenient construction, high-efficiency construction, excellent impermeability and strong bonding force.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.

Claims

1. An internal expansion type rubber sealing ring is characterized by comprising an annular rubber ring body arranged at a joint gap in a pipeline; an annular steel ring groove is arranged in the rubber ring body along the circumferential direction; the inner surface of the rubber ring body is provided with a mounting notch; the mounting notch is communicated with the steel ring groove;

an inner expansion steel ring matched with the steel ring groove is arranged in the steel ring groove; one part of the inner expansion steel ring body is disconnected to form an expansion opening; the expansion opening is arranged at the mounting opening; a plurality of supporting mechanisms are uniformly supported and arranged on the inner expansion steel ring at the expansion opening; sealing glue is filled in the mounting groove opening where the supporting mechanism is mounted;

the edges of the two sides of the outer ring wall of the inner expansion steel ring are both annularly protruded to form first expansion convex rings; the two circles of the first expansion convex rings are respectively positioned on two sides of the connecting gap in the pipeline.

2. The internally expanding rubber seal of claim 1, wherein said support means comprises an arcuate support bar; the arc shape of the supporting rod is matched with the arc shape of the internal expansion steel ring; the two ends of the supporting rod are integrally provided with clamping joints; one end of the clamping joint, which is far away from the supporting rod, is provided with a clamping interface; the thickness of the clamping interface is larger than the wall thickness of the inner expansion steel ring.

3. The internally expanding rubber-sealing ring as claimed in claim 2, wherein the second expansion ring is formed by two rings of the first expansion ring and the joint gap in the pipe, which are respectively formed on the outer ring wall of the internally expanding steel ring.

4. The internally expanding rubber seal ring according to claim 3, wherein the rubber seal ring body is integrally provided with annular receiving edges on both sides; the outer wall of the bearing edge is arranged close to the inner wall of the pipeline; the thickness of the bearing edge is gradually reduced from one side close to the rubber ring body to one side far away from the rubber ring body.

5. The inner expanding rubber seal ring of claim 4, wherein the sealing compound is a waterproof compound.