Extrusion type three-way pipe connecting piece rubber sealing ring

Abstract

The utility model discloses an extrusion type three-way pipe connecting piece rubber sealing ring which comprises a sealing ring body, two limiting rings are symmetrically and fixedly arranged on the outer edge of the sealing ring body in a sleeved mode, the opposite faces of the two limiting rings are respectively provided with an inclined face, an arc-shaped ring is fixedly arranged outside the sealing ring body in a sleeved mode, and the arc-shaped ring is located between the two limiting rings. The arc-shaped ring and the limiting ring are fixedly arranged outside the sealing ring body in a sleeving mode, the annular air bag is arranged on the inner side of the sealing ring body, and the annular air bag is communicated with the cavity in the annular ring through the air hole, so that the sealing ring can be suitable for a three-way pipe fitting with a check ring arranged on the inner wall or a sealing groove formed in the three-way pipe fitting at the same time; the conical ring is arranged, so that the firmness of the sealing ring body sleeving the outer part of the pipe fitting is improved, the fitting degree of the inner side of the sealing ring and the pipe fitting is improved, the gap between the inner side of the sealing ring and the outer wall of the pipe fitting is reduced, and the sealing performance of the connection between the pipe fitting and the three-way pipe connecting piece is further improved.

Description

Technical Field

[0001] This utility model relates to the field of rubber sealing ring technology, and in particular to a rubber sealing ring for an extruded tee pipe fitting. Background Technology

[0002] A rubber seal is an annular cover consisting of one or more parts, fixed to one of the rings or washers of a bearing or pipe fitting and in contact with another ring or washer or forming a narrow labyrinth gap to prevent liquid leakage and foreign object intrusion.

[0003] Tees, also known as pipe tees, are fittings, or tee connectors. They are mainly used to change the direction of fluid flow and are placed where a branch pipe needs to be installed on a main pipeline. They can be classified according to pipe diameter. They are generally made of materials such as carbon steel, cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon-bonded asphalt, and PVC.

[0004] When connecting a tee fitting to other pipe fittings, a sealing ring needs to be installed inside the tee fitting. The pipe fitting is squeezed into the tee fitting, and then fasteners such as clamps are used to fix the tee fitting and the pipe fitting. When installing the sealing ring, it needs to be inserted into the annular sealing groove of the pipe fitting or embedded in the internal retaining ring. This requires the use of two sealing rings with different shapes. Existing sealing rings can only be installed in pipe fittings with matching shapes, resulting in poor versatility. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rubber sealing ring for extruded tee pipe fittings.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rubber sealing ring for a compression-type tee pipe fitting, comprising a sealing ring body, two limiting rings symmetrically fixedly sleeved on the outer edge of the sealing ring body, each of the two limiting rings having an inclined surface on its opposite surface, the two inclined surfaces being symmetrical in their oblique directions, and an arc-shaped ring fixedly sleeved on the outside of the sealing ring body, the arc-shaped ring being located between the two limiting rings.

[0007] As a further description of the above technical solution: an annular airbag is fixedly sleeved on the inner side of the sealing ring body, and a cavity is provided inside the arc ring, the cavity being in communication with the airbag.

[0008] As a further description of the above technical solution: the inner radial side of the sealing ring body is provided with a plurality of equidistant annular arrays of air holes, and the cavity is connected to the airbag through the air holes.

[0009] As a further description of the above technical solution: multiple sealing sheets are fixedly connected to each of the air holes.

[0010] As a further description of the above technical solution: the plurality of sealing pieces are fan-shaped pieces and are distributed in a radially equidistant annular array within the air holes.

[0011] As a further description of the above technical solution: the flexibility of the arc-shaped ring is less than that of the annular airbag.

[0012] As a further description of the above technical solution: a conical ring is concentrically fixed on each of the two end faces of the sealing ring body, the tips of the two conical rings face opposite directions, the conical rings face the outside of the sealing ring body, and a retaining ring is concentrically fixed at the ends of the two conical rings.

[0013] This utility model has the following beneficial effects:

[0014] Compared with existing technologies, this extruded tee fitting rubber sealing ring improves the versatility of the sealing ring by fixing an arc-shaped ring and a limiting ring on the outside of the sealing ring body, and setting an annular air bladder on the inside of the sealing ring body, with the annular air bladder communicating with the cavity inside the annular ring through an air hole. This allows the sealing ring to be used with tee fittings that have a retaining ring on the inner wall or a sealing groove inside. A conical ring is set on each side of the sealing ring body, which improves the firmness of the sealing ring body on the outside of the fitting, improves the fit between the inner side of the sealing ring and the fitting, and reduces the gap between the inner side of the sealing ring and the outer wall of the fitting. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the overall structure of the rubber sealing ring for an extruded tee pipe connector proposed in this utility model;

[0016] Figure 2 This is a front view of the overall structure of the rubber sealing ring for an extruded tee pipe fitting proposed in this utility model;

[0017] Figure 3 This is a main sectional view of the overall structure of the rubber sealing ring for an extruded tee pipe fitting proposed in this utility model;

[0018] Figure 4 This utility model proposes a rubber sealing ring for an extruded tee pipe fitting. Figure 3 Enlarged view of the structure at point A in the middle;

[0019] Figure 5 This is a top view showing the connection between the air hole and the sealing plate of the rubber sealing ring of the extruded tee pipe fitting proposed in this utility model.

[0020] Legend:

[0021] 1. Sealing ring body; 2. Annular airbag; 3. Retaining ring; 4. Conical ring; 5. Limiting ring; 6. Arc ring; 7. Inclined surface; 8. Cavity; 9. Air hole; 10. Sealing plate. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Reference Figures 1 to 5 This utility model provides a rubber sealing ring for a compression-type tee pipe fitting: It includes a sealing ring body 1, with two limiting rings 5 ​​symmetrically fixedly fitted on the outer edge of the sealing ring body 1. Each of the two limiting rings 5 ​​has an inclined surface 7 on its opposite face, the two inclined surfaces 7 being symmetrical in their oblique directions. An arc-shaped ring 6 is fixedly fitted on the outside of the sealing ring body 1, located between the two limiting rings 5. A conical ring 4 is concentrically fixed on each of the two end faces of the sealing ring body 1, the tips of the two conical rings 4 facing opposite directions, with the conical ring 4 facing the sealing ring body. On the outer side, a retaining ring 3 is concentrically fixed at the ends of the two conical rings 4. An annular airbag 2 is fixedly fitted on the inner side of the sealing ring body 1. A cavity 8 is provided inside the arc ring 6. The cavity 8 is connected to the airbag. Multiple equidistant annular arrays of air holes 9 are provided radially on the inner side of the sealing ring body 1. The cavity 8 is connected to the airbag through the air holes 9. Multiple sealing pieces 10 are fixedly connected in each air hole 9. The multiple sealing pieces 10 are fan-shaped pieces and are distributed in a radial equidistant annular array inside the air hole 9. The flexibility of the arc ring 6 is less than that of the annular airbag 2.

[0024] By fixing an arc-shaped ring 6 and a limiting ring 5 to the outside of the sealing ring body 1, and setting an annular airbag 2 on the inside of the sealing ring body 1, and connecting the annular airbag 2 to the cavity 8 inside the annular ring through the air hole 9, the sealing ring can be used for both tee fittings with a retaining ring 3 on the inner wall and a sealing groove inside, thereby improving the versatility of the sealing ring. A conical ring 4 is set on each side of the sealing ring body 1, which improves the firmness of the sealing ring body 1 on the outside of the fitting, improves the fit between the inside of the sealing ring and the fitting, reduces the gap between the inside of the sealing ring and the outer wall of the fitting, and thus improves the sealing performance of the connection between the fitting and the tee fitting.

[0025] Working principle: First, the sealing ring body 1 is fitted onto the outer edge of the pipe fitting. As the pipe fitting extends into the sealing ring body 1, the tapered ring 4 gradually tightens under the action of the slope on the inner side of the tapered ring 4, so that the sealing ring body 1 is firmly attached to the outer edge of the pipe fitting through the tapered ring 4. When it is necessary to connect the pipe fitting to a tee fitting with a retaining ring inside, the pipe fitting with the sealing ring body 1 fitted is inserted into the fitting. The arc ring 6 on the sealing ring body 1 is compressed under the pressure of the retaining ring, and the air in the cavity 8 of the arc ring 6 enters the vent. When air enters the vent 9, the vent 9 expands under air pressure, increasing its diameter. At the same time, the sealing plates 10 separate, allowing the air in the vent 9 to enter the annular airbag 2. The annular airbag 2 expands and fits against the outer edge of the pipe. Meanwhile, the retaining ring is embedded between the two limiting rings 5. When all the air in the vent 9 has entered the annular airbag 2, the diameter of the vent 9 returns to normal, and the sealing plates 10 close together, so that the vent 9 and the annular airbag 2 are in a closed state, preventing the air in the annular airbag 2 from returning to the cavity 8.

[0026] When connecting to a tee fitting with an internal sealing groove, insert the fitting with the sealing ring body 1 into the fitting, so that the outer edge of the arc ring 6 is engaged in the sealing groove inside the fitting.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An extruded rubber sealing ring for a tee fitting, comprising a sealing ring body (1), characterized in that: The outer edge of the sealing ring body (1) is symmetrically sleeved with two limiting rings (5), the opposite surfaces of the two limiting rings (5) are respectively provided with a slope (7), the slopes (7) of the two slopes (7) are symmetrically inclined, the outer part of the sealing ring body (1) is sleeved with an arc-shaped ring (6), and the arc-shaped ring (6) is located between the two limiting rings (5); the inner side of the sealing ring body (1) is sleeved with an annular air bag (2), the arc-shaped ring (6) is provided with a cavity (8), and the cavity (8) is in communication with the air bag.

2. A rubber sealing ring for an extruded tee fitting according to claim 1, characterized in that: The inner side of the sealing ring body (1) is radially provided with a plurality of equidistant annular array air holes (9), and the cavity (8) is in communication with the air bag through the air holes (9).

3. A rubber sealing ring for an extruded tee fitting according to claim 2, characterized in that: A plurality of sealing sheets (10) are respectively fixedly connected in each air hole (9).

4. The rubber sealing ring of the extruded tee pipe fitting according to claim 3, characterized in that: The plurality of sealing sheets (10) are fan-shaped sheets and are radially and equidistantly annularly arranged in the air holes (9).

5. The rubber sealing ring of the extruded tee-pipe fitting according to claim 1, characterized in that: The flexibility of the arc-shaped ring (6) is less than that of the annular air bag (2).

6. The rubber sealing ring of the extruded tee-pipe fitting according to claim 1, characterized in that: The two side end faces of the sealing ring body (1) are respectively concentrically fixed with a conical ring (4), the tips of the two conical rings (4) face opposite directions, the conical ring (4) faces the outer side of the sealing ring body (1), and the two conical rings (4) are respectively concentrically fixed with a stop ring (3) at the ends.

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