Sealing gasket with good sealing effect

Abstract

The sealing washer with the good sealing effect comprises an upper pressing ring and a lower pressing ring, a V-shaped groove is formed in one end of the upper pressing ring, the section of the lower pressing ring is triangular, the lower pressing ring right faces the V-shaped groove, and the included angle between the two sides of the V-shaped groove is smaller than the angle, right facing the corner angle of the V-shaped groove, of the lower pressing ring. The upper pressing ring and the lower pressing ring are arranged, so that relative rotation occurs between the upper pressing ring and the lower pressing ring, and the possibility of pulling fracture under the condition that two joint surfaces rotate reversely is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing gaskets and relates to a sealing gasket with good sealing effect. Background Art

[0002] A sealing gasket is an annular workpiece used to seal between two mating surfaces. The sealing gasket is usually made of elastic material and fits tightly with the mating surface under the pressure of the two mating surfaces to achieve the purpose of sealing.

[0003] In the process of sealing, the sealing gasket may be subjected to axial pressure and circumferential torsional force. In the process of bearing pressure and torsional force, the sealing gasket will be deformed. Especially when the friction between the mating surface and the end face of the sealing gasket is large, the deformation process may cause breakage, thereby reducing the sealing effect. Utility Model Content

[0004] In view of the above problems, the utility model proposes a sealing gasket with good sealing effect, which well solves the problems in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A sealing gasket with good sealing effect, comprising:

[0007] An upper pressure ring, one end of which is provided with a V-shaped groove;

[0008] A lower pressure ring, the cross section of which is triangular and which faces the V-shaped groove;

[0009] Among them, the angle between the two sides of the V-shaped groove is smaller than the angle of the lower pressure ring facing the edge of the V-shaped groove.

[0010] Optionally, retaining rings are fixedly installed on both sides of the upper pressure ring, and the retaining rings are made of rigid material.

[0011] Optionally, one end of the upper pressure ring away from the V-shaped groove protrudes out of the retaining ring.

[0012] Optionally, a pressure ring is provided at one end of the lower pressure ring away from the upper pressure ring, and the width of the pressure ring is not greater than the maximum width of the V-shaped groove opening.

[0013] Optionally, an edge of the lower pressure ring close to the V-shaped groove and an edge of the upper pressure ring close to the lower pressure ring are both provided with chamfers.

[0014] Optionally, the retaining rings are installed on both sides of the pressure ring.

[0015] Optionally, a plurality of the upper pressure rings and the lower pressure rings are provided, the plurality of the upper pressure rings and the lower pressure rings are arranged concentrically, and adjacent upper pressure rings or lower pressure rings are fixedly connected.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. When the sealing gasket is sealed under pressure, the two sides of the sealing gasket may be subjected to opposite circumferential torsional forces, causing the soft sealing gasket to bulge at some positions, reducing the sealing performance of the position. By setting an upper pressure ring and a lower pressure ring, the upper pressure ring and the lower pressure ring correspond to the two surfaces that need to be sealed respectively. When the two surfaces rotate, the upper pressure ring and the lower pressure ring follow the rotation, so that the relative rotation occurs between the upper pressure ring and the lower pressure ring, reducing the possibility of pulling and breaking when the two joint surfaces rotate in the opposite direction;

[0018] 2. Multiple upper and lower pressure rings are arranged concentrically to form multiple seals and improve the sealing effect. At the same time, the retaining ring is used to divide the adjacent upper and lower pressure rings so that the positions where the upper and lower pressure rings contact the sealing surfaces are multiple relatively independent concentric ring surfaces, further reducing the risks caused by deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model.

[0020] Figure numerals: 1, upper pressure ring; 11, V-shaped groove; 2, lower pressure ring; 3, retaining ring; 4, pressure ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1 , is a sealing gasket with good sealing effect disclosed in an embodiment of the utility model, comprising an upper pressure ring 1 and a lower pressure ring 2. A V-shaped groove 11 is opened at one end of the upper pressure ring 1, and the cross-section of the lower pressure ring 2 is triangular. The lower pressure ring 2 faces the V-shaped groove 11, and the angle between the two sides of the V-shaped groove 11 is smaller than the angle of the lower pressure ring 2 facing the corner of the V-shaped groove 11.

[0023] Specifically, when the sealing gasket is under pressure to seal, the two sides of the sealing gasket may be subjected to opposite circumferential torsional forces, causing the soft sealing gasket to bulge at some positions, thereby reducing the sealing performance at that position. By providing an upper pressure ring 1 and a lower pressure ring 2, the upper pressure ring 1 and the lower pressure ring 2 respectively correspond to two surfaces that need to be sealed. When the two surfaces rotate, the upper pressure ring 1 and the lower pressure ring 2 follow the rotation, so that the relative rotation occurs between the upper pressure ring 1 and the lower pressure ring 2, thereby reducing the possibility of pulling and breaking when the two mating surfaces rotate in opposite directions.

[0024] In some feasible embodiments, the contact surface between the V-shaped groove 11 and the lower pressure ring 2 is set to be a smooth surface.

[0025] As a specific implementation of a sealing gasket with good sealing effect provided by the utility model, retaining rings 3 are fixedly installed on both sides of the upper pressure ring 1, and the retaining rings 3 are made of rigid material.

[0026] In general, the lower pressure ring 2 and the upper pressure ring 1 are sealed by extrusion, and the extrusion causes the two sides of the V-shaped groove 11 of the upper pressure ring 1 to deviate. By setting the retaining ring 3, the deviation of the two sides of the V-shaped groove 11 is limited, and the contact area between the lower pressure ring 2 is increased to achieve a better sealing effect.

[0027] Furthermore, one end of the upper pressure ring 1 away from the V-shaped groove 11 protrudes out of the retaining ring 3 .

[0028] It should be understood that in order to facilitate limiting the deviation of the V-groove 11, the retaining ring 3 is made of a rigid material so that the end of the upper pressure ring 1 away from the V-groove 11 protrudes out of the retaining ring 3, even if the upper pressure ring 1 contacts the end face to be sealed, so as to form a seal.

[0029] In some feasible embodiments, the rigid material is a material that is not easily deformed and can provide support for the upper pressure ring 1. Different materials such as steel, plastic, etc. can be selected according to the applicable usage scenario.

[0030] Furthermore, a pressure ring 4 is provided at one end of the lower pressure ring 2 away from the upper pressure ring 1 , and the width of the pressure ring 4 is not greater than the maximum width of the opening of the V-shaped groove 11 .

[0031] It should be understood that by providing the pressure ring 4, a portion of the lower pressure ring 2 is made to penetrate into the V-shaped groove 11 under extrusion, thereby increasing the sealing effect.

[0032] In some feasible embodiments, the pressure ring 4 and the lower pressure ring 2 are an integral structure, and the maximum width of the opening of the V-shaped groove 11 is the width of the V-shaped groove 11 on one side close to the lower pressure ring 2 .

[0033] Furthermore, the edge of the lower pressing ring 2 close to the V-shaped groove 11 and the edge of the upper pressing ring 1 close to the lower pressing ring 2 are both provided with chamfers.

[0034] It should be understood that chamfers are provided on the edges of the lower pressure ring 2 close to the V-shaped groove 11 so that the lower pressure ring 2 does not contact the inner edges of the V-shaped groove 11 during the process of entering the V-shaped groove 11, thereby reducing the possibility of support being formed at this position to affect the extrusion seal.

[0035] Furthermore, retaining rings 3 are installed on both sides of the pressure ring 4 .

[0036] It should be understood that the retaining rings 3 are installed on both sides of the pressure ring 4 to reduce the deformation of the pressure ring 4 and the lower pressure ring 2 during the extrusion process, thereby further improving the sealing effect.

[0037] As another specific implementation of a sealing gasket with good sealing effect provided by the utility model, multiple upper pressure rings 1 and lower pressure rings 2 are provided, and the multiple upper pressure rings 1 and lower pressure rings 2 are concentrically arranged, and adjacent upper pressure rings 1 or lower pressure rings 2 are fixedly connected.

[0038] In combination with specific usage scenarios, multiple upper pressure rings 1 and lower pressure rings 2 are concentrically arranged to form multiple seals to improve the sealing effect. At the same time, the retaining ring 3 is used to divide the adjacent upper pressure rings 1 or lower pressure rings 2, so that the positions where the upper pressure ring 1 and the lower pressure ring 2 contact the sealing surfaces are multiple relatively independent concentric annular surfaces, further reducing the risks caused by deformation.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sealing gasket with good sealing effect, characterized in that: include: An upper pressure ring, one end of which is provided with a V-shaped groove; A lower pressure ring, the cross section of which is triangular and which faces the V-shaped groove; Among them, the angle between the two sides of the V-shaped groove is smaller than the angle of the lower pressure ring facing the edge of the V-shaped groove.

2. A sealing gasket with good sealing effect according to claim 1, characterized in that: Retaining rings are fixedly installed on both sides of the upper pressure ring, and the retaining rings are made of rigid material.

3. A sealing gasket with good sealing effect according to claim 2, characterized in that: One end of the upper pressure ring away from the V-shaped groove protrudes from the retaining ring.

4. A sealing gasket with good sealing effect according to claim 3, characterized in that: A pressure ring is provided at one end of the lower pressure ring away from the upper pressure ring, and the width of the pressure ring is not greater than the maximum width of the V-shaped groove opening.

5. A sealing gasket with good sealing effect according to claim 4, characterized in that: The edge of the lower pressure ring close to the V-shaped groove and the edge of the upper pressure ring close to the lower pressure ring are both provided with chamfers.

6. A sealing gasket with good sealing effect according to claim 4, characterized in that: The retaining rings are installed on both sides of the pressure ring.

7. A sealing gasket with good sealing effect according to claim 6, characterized in that: The upper pressure ring and the lower pressure ring are provided in plurality, and the plurality of the upper pressure rings and the lower pressure rings are arranged concentrically, and adjacent upper pressure rings or lower pressure rings are fixedly connected.

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