Anti-falling framework rubber sealing ring

Abstract

The utility model discloses an anti-falling framework rubber sealing ring which comprises an annular framework, a rubber layer is wrapped outside the annular framework, the annular framework is a plastic circular ring framework which is formed by engineering plastics in an injection molding mode, the section of the plastic circular ring framework is in a square shape, and a plurality of annular grooves are formed in the two end faces of the plastic circular ring framework. A plurality of through holes which penetrate through and are perpendicular to the two end faces and are annularly distributed are formed in the plastic circular ring framework, the rubber layers are formed in a compression molding mode and wrap the plastic circular ring framework, and the through holes are filled with rubber to form rubber tie bars connecting the upper rubber layer and the lower rubber layer. The built-in sealing device is simple in structure, low in manufacturing cost and suitable for built-in sealing of pipeline connection, and solves the problem that the built-in sealing device is easy to deform and fall off due to extrusion.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe fitting connectors, in particular to an anti-detachment skeleton rubber sealing ring. Background Art

[0002] When a pipeline system conveys various fluids (such as gases, liquids), it is necessary to ensure the tightness of the connection to prevent fluid leakage. The built-in sealing ring can closely fit the connection part of the pipeline, fill the tiny gaps between the connection surfaces, and effectively prevent the fluid from seeping out from the connection. For example, in a gas pipeline system, if the connection is not tightly sealed, the leaked gas may cause serious safety accidents such as fires and explosions. In a water supply pipeline, leakage will lead to problems such as water resource waste and water pressure drop.

[0003] In the prior art, the sealing ring is generally made of a single rubber material. The built-in sealing ring at the pipeline connection is easily squeezed and deformed or detached during the installation process. In addition, after the pipeline is connected, when the fluid flows in the pipeline system or the equipment operates, vibrations will be generated. If these vibrations are transmitted to the pipeline connection, it may cause the connection part to become loose, damaged, or even lead to leakage. Currently, the disclosed skeleton sealing rings are all various special skeleton sealing rings, with complex structures and high manufacturing costs, and are not suitable for use as built-in seals at pipeline connections. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problems existing in the above-mentioned prior art, and provide an anti-detachment skeleton rubber sealing ring, which has a simple structure, low manufacturing cost, is suitable for built-in sealing of pipeline connections, and solves the problems of being easily squeezed and deformed or detached.

[0005] The technical solution of the utility model is realized as follows: an anti-detachment skeleton rubber sealing ring, including an annular skeleton, with a rubber layer coated on the outside of the annular skeleton. The annular skeleton is a plastic circular ring skeleton made of engineering plastic by injection molding and with a square cross-section. A number of annular grooves are provided on both end faces of the plastic circular ring skeleton, and a number of through holes are provided on the plastic circular ring skeleton, which penetrate and are vertically and annularly distributed on both end faces. The rubber layer is a rubber layer formed by molding and coating on the outside of the plastic circular ring skeleton, and the through holes are filled with rubber to form rubber tie bars connecting the upper and lower rubber layers.

[0006] Preferably, three annular grooves are provided on both end faces of the plastic circular ring skeleton, and eight through holes are provided on the plastic circular ring skeleton, which penetrate and are vertically and annularly distributed on both end faces.

[0007] Preferably, the four annular edges of the plastic circular ring skeleton with a square cross-section are rounded.

[0008] Preferably, the four annular edges of the outside of the rubber layer are rounded.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0010] (1) The present utility model is composed of a plastic ring skeleton and a rubber layer coated on the outside of the plastic ring skeleton. It has a simple structure and low manufacturing cost, and is suitable for internal sealing of pipeline connections. Supported by the plastic ring skeleton, it effectively avoids being squeezed and deformed, separating from the pipeline connection end face and entering the pipeline, thus avoiding water leakage and air leakage problems.

[0011] (2) The present utility model is provided with a plurality of annular grooves on both end faces of the plastic ring skeleton, which increases the adhesion strength of the rubber layer, avoids the horizontal slippage of the rubber layer when being squeezed, and is beneficial to reducing the situation of the rubber layer being squeezed and broken.

[0012] (3) The present utility model is provided with a plurality of through holes penetrating and vertically annularly distributed on the plastic ring skeleton. During the molding process, the inside of the through holes is filled with rubber, and the rubber inside the through holes connects the rubber layers on both end faces together, making the combination of the rubber layer and the plastic ring skeleton tighter, further avoiding the horizontal slippage problem of the rubber layer when being squeezed, and ensuring the uniformity and tightness of the seal. Description of the Drawings

[0013] Figure 1 is a three-dimensional structural schematic diagram of the anti-detachment skeleton rubber seal ring of the present utility model and its use position;

[0014] Figure 2 is a three-dimensional structural schematic diagram of the partial section of the anti-detachment skeleton rubber seal ring of the present utility model;

[0015] Figure 3 is a three-dimensional structural schematic diagram of the plastic ring skeleton of the present utility model.

[0016] In the figure: 1 pipeline, 2 anti-detachment skeleton rubber seal ring, 3 plastic ring skeleton, 4 annular groove, 5 through hole, 6 rubber layer, 7 rubber rib. Detailed Embodiments

[0017] Hereinafter, embodiments of the technical solution of the present utility model will be described in detail with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, so they are only examples and cannot be used to limit the protection scope of the present utility model.

[0018] Such as Figures 1 to 3As shown in the figure, an anti-detachment skeleton rubber sealing ring 2 includes an annular skeleton, with a rubber layer coated on the outside of the annular skeleton. The annular skeleton is a plastic circular ring skeleton 3 made of engineering plastics by injection molding and having a square cross-section. Three annular grooves 4 are provided on both end faces of the plastic circular ring skeleton 3. Eight through holes 5 are provided on the plastic circular ring skeleton 3, which penetrate and are vertically annularly distributed on both end faces. The rubber layer is a rubber layer 6 formed by molding and coating on the outside of the plastic circular ring skeleton 3. Rubber tension bars 7 connecting the upper and lower rubber layers are formed by filling rubber in the through holes 5. Four annular edges of the plastic circular ring skeleton 3 with a square cross-section are rounded. Four annular edges on the outside of the rubber layer 6 are rounded.

[0019] The anti-detachment skeleton rubber sealing ring 2 of the present utility model is used for the end face connection between two butt-jointed pipes 1. Because it is supported by the plastic circular ring skeleton 3, it will not be squeezed and deformed due to the connection and installation of the pipes 1 and be squeezed into the pipes 1, nor will it fall off into the pipes 1 due to the vibration generated by fluid flow or equipment operation, resulting in problems such as loosening, damage, and leakage at the connection part.

[0020] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present utility model, and they should all be covered by the scope of the claims and the description of the present utility model.

Claims

1. An anti-falling skeleton rubber sealing ring, comprising an annular skeleton, and a rubber layer coated on the outside of the annular skeleton, characterized in that: The annular skeleton is a plastic ring skeleton which is injection molded from engineering plastic and has a square cross-section. A plurality of annular grooves are arranged on the two end faces of the plastic ring skeleton. A plurality of through holes which penetrate through and are distributed in an annular manner perpendicular to the two end faces are arranged on the plastic ring skeleton. The rubber layer is a rubber layer which is molded and coated on the outside of the plastic ring skeleton. The through holes are filled with rubber to form rubber tie bars which connect the upper and lower rubber layers.

2. The anti-falling skeleton rubber sealing ring according to claim 1, characterized in that: Three annular grooves are arranged on the two end faces of the plastic circular ring frame, and eight through holes penetrating through and vertically distributed in an annular manner on the plastic circular ring frame are arranged.

3. The anti-falling skeleton rubber sealing ring according to claim 2 is characterized by: The four annular edges of the plastic ring frame with a square cross section are rounded.

4. The anti-falling skeleton rubber sealing ring according to claim 3 is characterized by: The four annular edges outside the rubber layer are rounded.

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