Multi-layer protective high-pressure-resistant anti-extrusion sealing ring

Abstract

The utility model discloses a multilayer protection high pressure resistant anti-extrusion seal ring, relates to seal ring technical field, including seal ring main part and steel ring main part, seal ring main part inner upper end is equipped with the mounting groove, and the steel ring main part is arranged in the mounting groove, seal ring main part inner lower end is equipped with the cavity, a cavity is formed in the sealing ring body, exhaust holes are formed in the outer portion of the cavity, a polytetrafluoroethylene layer is arranged on the outer portion of the sealing ring body, a hydrogenated acrylonitrile butadiene rubber layer is arranged in the polytetrafluoroethylene layer, a polyvinyl chloride layer is arranged on the inner side of the hydrogenated acrylonitrile butadiene rubber layer, and meanwhile a polyurethane layer is arranged in the polyvinyl chloride layer. According to the multi-layer protection high-pressure-resistant anti-extrusion sealing ring, the overall pressure resistance of the sealing ring can be improved, the sealing ring is prevented from being deformed due to external pressure in the using process, the sealing performance of the sealing ring is improved, and meanwhile the overall practicability and the using efficiency of the sealing ring are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sealing ring, concretely to a multilayer protection high pressure resistant extrusion sealing ring. BACKGROUND

[0002] The sealing ring is a device for preventing liquid or gas leakage, usually made of elastic material, having a sealing effect, and the material of the sealing ring has an important influence on its sealing performance and service life. Common materials include NBR nitrile rubber, HNBR hydrogenated butyl nitrile rubber, SIL silicone rubber, VITON fluorine rubber, EPDM ethylene propylene diene rubber, CR chloroprene rubber, IIR butyl rubber, etc. In order to improve the sealing efficiency in the mechanical structure, a sealing ring is needed, but the existing sealing ring still has the following shortcomings:

[0003] For example, the utility model discloses a piston sealing ring, which can ensure that the hollow ring body is easily reset when it is not used for plugging, ensure that the hollow ring body has a certain pore with the plugging end, reduce the frictional resistance during the movement of the piston, and facilitate operation. The sealing ring can ensure the sealing property of plugging and reduce the difficulty of operation. However, similar to the above-mentioned comparative document, when the existing sealing ring is used, most sealing rings do not have high pressure resistance, which causes the sealing ring to deform under pressure during use, resulting in poor fit between the sealing ring and the sealing part, affecting the sealing property of the sealing ring, and causing the practicality and efficiency of the sealing ring to decrease.

[0004] Therefore, in view of the above problems, the present utility model provides a multilayer protection high pressure resistant extrusion sealing ring. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a multilayer protection high pressure resistant extrusion sealing ring to solve the problems in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a multilayer protection high pressure resistant extrusion sealing ring, comprising a sealing ring main body and a steel ring main body, an installation groove is formed in the upper end of the sealing ring main body, and the steel ring main body is arranged in the installation groove, a cavity is formed in the lower end of the sealing ring main body, and an exhaust hole is formed in the outside of the cavity, a polytetrafluoroethylene layer is arranged on the outside of the sealing ring main body, a hydrogenated butyl cyanide rubber layer is arranged in the polytetrafluoroethylene layer, a polyvinyl chloride layer is arranged on the inner side of the hydrogenated butyl cyanide rubber layer, and a polyurethane layer is arranged in the polyvinyl chloride layer.

[0007] Further, the installation groove is internally sized to match the external size of the steel ring body, and the steel ring body is embeddedly connected with the sealing ring body through the installation groove.

[0008] Further, the exhaust hole is centrally arranged in the outer end of the cavity, and the exhaust hole is vertically distributed with the cavity.

[0009] Further, the number of exhaust holes is ten, and the ten exhaust holes are equidistantly distributed in the lower end of the sealing ring body.

[0010] Further, the hydrogenated butadiene-acrylonitrile rubber layer is arranged on both sides of the polytetrafluoroethylene layer and the polyvinyl chloride layer, and is arranged and limited between the polytetrafluoroethylene layer and the polyvinyl chloride layer.

[0011] Further, the hydrogenated butadiene-acrylonitrile rubber layer is arranged on both sides of the polytetrafluoroethylene layer and the polyvinyl chloride layer, and is arranged and limited between the polytetrafluoroethylene layer and the polyvinyl chloride layer.

[0012] Further, the polyvinyl chloride layer is arranged on both sides of the hydrogenated butadiene-acrylonitrile rubber layer and the polyurethane layer, and is arranged and limited between the hydrogenated butadiene-acrylonitrile rubber layer and the polyurethane layer.

[0013] Further, the polyvinyl chloride layer is arranged on both sides of the hydrogenated butadiene-acrylonitrile rubber layer and the polyurethane layer, and is arranged and limited between the hydrogenated butadiene-acrylonitrile rubber layer and the polyurethane layer.

[0014] The utility model provides a kind of multilayer protection high-pressure-resistant extrusion-resistant sealing ring, with following beneficial effects:

[0015] 1, the utility model is provided with steel ring body, can when multilayer protection high-pressure-resistant extrusion-resistant sealing ring is used, the setting of steel ring body makes that sealing ring body has certain extrusion resistance in use process, avoids the deformation of sealing ring body under pressure, when sealing ring body is installed, air in cavity is discharged with exhaust hole, so that sealing ring body can be stably installed in mechanical part, to improve the pressure resistance of sealing ring body, improve the overall practicality and use efficiency of sealing ring.

[0016] 2, The utility model discloses a polyurethane layer's setting can in multilayer protection high -pressure -resistant extrusion sealing washer uses, through the polytetrafluoroethylene layer increases the oil dirt resistance in sealing washer use process, and polytetrafluoroethylene has good oil resistance, and has excellent resistance to oil product, thereby strong oil resistance, and the hydrogenated butadiene -acrylonitrile rubber layer that sets up in the polytetrafluoroethylene layer inside has good heat resistance, can resist ozone, sunlight and atmospheric air oxidation's characteristics, can increase the aging resistance of sealing washer main part, and the polyvinyl chloride layer has certain crack resistance, can avoid the crack of sealing washer main part after long -term use, and the polyurethane layer that sets up in the polyvinyl chloride layer inside has the use of acid -resistant, corrosion -resistant, high -temperature resistant, further improves the practicality of sealing washer, increases the overall practicality and use efficiency of sealing washer. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of a multilayer protection high-pressure-resistant extrusion sealing ring of the utility model.

[0018] Figure 2 It is a sealing ring main body three-dimensional sectional structure schematic view of a multilayer protection high-pressure-resistant extrusion sealing ring of the utility model.

[0019] Figure 3 It is a polyurethane layer three-dimensional structure schematic view of a multilayer protection high-pressure-resistant extrusion sealing ring of the utility model.

[0020] In the drawing: 1, sealing ring main body; 2, mounting groove; 3, steel ring main body; 4, cavity; 5, exhaust hole; 6, polytetrafluoroethylene layer; 7, hydrogenated butadiene-acrylonitrile rubber layer; 8, polyvinyl chloride layer; 9, polyurethane layer. DETAILED DESCRIPTION

[0021] The embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model, but cannot be used to limit the scope of the utility model.

[0022] As Figure 1 And Figure 2As shown, a multi-layer protective high-pressure-resistant extrusion-resistant sealing ring includes a sealing ring body 1 and a steel ring body 3, an installation groove 2 is formed in the upper end of the sealing ring body 1, and the steel ring body 3 is arranged in the installation groove 2, a cavity 4 is formed in the lower end of the sealing ring body 1, and an exhaust hole 5 is formed in the outer end of the cavity 4, the size of the installation groove 2 is matched with the size of the steel ring body 3, the steel ring body 3 is connected with the sealing ring body 1 in an embedded manner through the installation groove 2, the exhaust hole 5 is arranged in the middle of the outer end of the cavity 4, and the exhaust hole 5 and the cavity 4 are arranged in a vertical manner, the number of the exhaust hole 5 is ten, and the ten exhaust holes 5 are arranged equidistantly in the lower end of the sealing ring body 1, the steel ring body 3 is fixedly installed in the upper end of the sealing ring body 1 through the installation groove 2 formed in the upper end of the sealing ring body 1, the sealing ring body 1 has a certain extrusion resistance during use by arranging the steel ring body 3, and the deformation of the sealing ring body 1 under pressure is avoided, when the sealing ring body 1 is installed, the air in the cavity 4 is discharged through the exhaust hole 5, so that the sealing ring body 1 can be stably installed in the mechanical part, and the pressure resistance of the sealing ring body 1 is improved, and the overall practicality and use efficiency of the sealing ring are improved.

[0023] As shown, a multi-layer protective high-pressure-resistant extrusion-resistant sealing ring includes a sealing ring body 1 and a steel ring body 3, an installation groove 2 is formed in the upper end of the sealing ring body 1, and the steel ring body 3 is arranged in the installation groove 2, a cavity 4 is formed in the lower end of the sealing ring body 1, and an exhaust hole 5 is formed in the outer end of the cavity 4, the size of the installation groove 2 is matched with the size of the steel ring body 3, the steel ring body 3 is connected with the sealing ring body 1 in an embedded manner through the installation groove 2, the exhaust hole 5 is arranged in the middle of the outer end of the cavity 4, and the exhaust hole 5 and the cavity 4 are arranged in a vertical manner, the number of the exhaust hole 5 is ten, and the ten exhaust holes 5 are arranged equidistantly in the lower end of the sealing ring body 1, the steel ring body 3 is fixedly installed in the upper end of the sealing ring body 1 through the installation groove 2 formed in the upper end of the sealing ring body 1, the sealing ring body 1 has a certain extrusion resistance during use by arranging the steel ring body 3, and the deformation of the sealing ring body 1 under pressure is avoided, when the sealing ring body 1 is installed, the air in the cavity 4 is discharged through the exhaust hole 5, so that the sealing ring body 1 can be stably installed in the mechanical part, and the pressure resistance of the sealing ring body 1 is improved, and the overall practicality and use efficiency of the sealing ring are improved. Figures 1 to 3 As shown, a multi-layer protective high-pressure-resistant extrusion-resistant sealing ring includes a sealing ring body 1 and a steel ring body 3, an installation groove 2 is formed in the upper end of the sealing ring body 1, and the steel ring body 3 is arranged in the installation groove 2, a cavity 4 is formed in the lower end of the sealing ring body 1, and an exhaust hole 5 is formed in the outer end of the cavity 4, the size of the installation groove 2 is matched with the size of the steel ring body 3, the steel ring body 3 is connected with the sealing ring body 1 in an embedded manner through the installation groove 2, the exhaust hole 5 is arranged in the middle of the outer end of the cavity 4, and the exhaust hole 5 and the cavity 4 are arranged in a vertical manner, the number of the exhaust hole 5 is ten, and the ten exhaust holes 5 are arranged equidistantly in the lower end of the sealing ring body 1, the steel ring body 3 is fixedly installed in the upper end of the sealing ring body 1 through the installation groove 2 formed in the upper end of the sealing ring body 1, the sealing ring body 1 has a certain extrusion resistance during use by arranging the steel ring body 3, and the deformation of the sealing ring body 1 under pressure is avoided, when the sealing ring body 1 is installed, the air in the cavity 4 is discharged through the exhaust hole 5, so that the sealing ring body 1 can be stably installed in the mechanical part, and the pressure resistance of the sealing ring body 1 is improved, and the overall practicality and use efficiency of the sealing ring are improved.

[0024] In summary, the multilayer protective high-pressure-resistant extrusion-resistant sealing ring, when in use, first, the steel ring body 3 is fixedly installed at the upper end inside the sealing ring body 1 through the installation groove 2 formed at the upper end inside the sealing ring body 1, the sealing ring body 1 has a certain extrusion resistance in the use process by the arrangement of the steel ring body 3, when the sealing ring body 1 is installed, the air inside the cavity 4 is discharged through the exhaust hole 5, so that the sealing ring body 1 can be stably installed inside the mechanical part, thereby improving the pressure resistance of the sealing ring body 1, then, the oil stain resistance in the use process of the sealing ring is increased by the polytetrafluoroethylene layer 6, the polytetrafluoroethylene has good oil resistance, has excellent resistance to oil, so that the oil resistance is high, and the hydrogenated butadiene-acrylonitrile rubber layer 7 arranged inside the polytetrafluoroethylene layer 6 has good heat resistance, can resist ozone, sunlight and atmospheric air oxidation, can increase the aging resistance of the sealing ring body 1, the polyvinyl chloride layer 8 has a certain anti-cracking property, can avoid the cracking of the sealing ring body 1 after long-term use, and the polyurethane layer 9 arranged inside the polyvinyl chloride layer 8 has the use properties of acid and alkali resistance, corrosion resistance and high temperature resistance, further improves the practicability of the sealing ring, and increases the overall practicability and use efficiency of the sealing ring.

[0025] Embodiments of the present application are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the application to the forms disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. Embodiments were chosen and described in order to best explain the principles of the application and its practical application, and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A multilayer protective high-pressure resistant extrusion-resistant sealing ring comprising a sealing ring body (1) and a steel ring body (3), characterized in that, The sealing ring body (1) is internally provided with an installation groove (2) at the upper end, and a steel ring body (3) is arranged in the installation groove (2); the sealing ring body (1) is internally provided with a cavity (4) at the lower end, and an exhaust hole (5) is arranged at the outer end of the cavity (4); the sealing ring body (1) is externally provided with a polytetrafluoroethylene layer (6), and the polytetrafluoroethylene layer (6) is internally provided with a hydrogenated butadiene-acrylonitrile rubber layer (7); the hydrogenated butadiene-acrylonitrile rubber layer (7) is internally provided with a polyvinyl chloride layer (8), and the polyvinyl chloride layer (8) is internally provided with a polyurethane layer (9).

2. A multi-layer protective high-pressure resistant extrusion-resistant sealing ring according to claim 1, characterized in that The installation groove (2) is internally provided with a size matching the external size of the steel ring body (3), and the steel ring body (3) is connected with the sealing ring body (1) in an embedded mode through the installation groove (2).

3. The multi-layer protective high-pressure resistant extrusion-resistant sealing ring according to claim 1, characterized in that The exhaust hole (5) is arranged at the middle end of the outer end of the cavity (4) in a vertical mode.

4. The multi-layer protective high-pressure and extrusion resistant seal ring of claim 1, wherein, The exhaust hole (5) is arranged at the lower end of the sealing ring body (1) in an equidistant mode.

5. The multi-layer protective high-pressure and extrusion resistant seal ring of claim 1, wherein, The polytetrafluoroethylene layer (6) and the polyvinyl chloride layer (8) are arranged at the upper and lower sides of the hydrogenated butadiene-acrylonitrile rubber layer (7) respectively, and the hydrogenated butadiene-acrylonitrile rubber layer (7) is arranged and limited between the polytetrafluoroethylene layer (6) and the polyvinyl chloride layer (8).

6. The multi-layer protective high-pressure and extrusion resistant seal ring of claim 1, wherein, The hydrogenated butadiene-acrylonitrile rubber layer (7) and the polytetrafluoroethylene layer (6) are arranged in a horizontal mode at the outer side, and the outer side of the hydrogenated butadiene-acrylonitrile rubber layer (7) is tightly combined with the inner side of the polytetrafluoroethylene layer (6).

7. The multi-layer protective high-pressure and extrusion resistant seal ring of claim 1, wherein, The hydrogenated butadiene-acrylonitrile rubber layer (7) and the polyurethane layer (9) are arranged at the upper and lower sides of the polyvinyl chloride layer (8) respectively, and the polyvinyl chloride layer (8) is arranged and limited between the hydrogenated butadiene-acrylonitrile rubber layer (7) and the polyurethane layer (9).

8. The multi-layer protective high-pressure and extrusion resistant seal ring of claim 1, wherein, The polyvinyl chloride layer (8) and the polyurethane layer (9) are arranged in a horizontal mode at the outer side, and the inner side of the polyvinyl chloride layer (8) is tightly combined with the outer side of the polyurethane layer (9).

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