CN202946259U - Sealing gasket structure for flange - Google Patents

Abstract

The utility model discloses a sealing gasket structure for flanges, which comprises a sealing gasket; a through hole is formed in the middle of the sealing gasket; threaded connection holes corresponding to flange bolt holes are formed in the circumference of the sealing gasket; and bulging rings are arranged on upper and lower surfaces of the sealing gasket. According to the sealing gasket structure, a sealing ring of the designed sealing gasket is provided with the bulging rings at the upper and lower parts, the sealing gasket is arranged between two flanges, the bulging rings on two sides are tightly attached to the flange surface under the extrusion of the flanges on two sides, therefore good air tightness is formed, and the sealing gasket is pressed tightly and gradually in an operation process due to the influence of high-temperature waste gas. Furthermore, the manufacturing technique is simple, and the air tightness is good.

Description

Gasket structure for flange

technical field

The utility model relates to the technical field of vehicles and engineering machinery parts, in particular to a gasket structure for a flange.

technical background

Flange connection is a common connection method for engine exhaust system. In order to ensure the tightness of the exhaust system and reduce exhaust leakage, a gasket must be installed at the flange connection. The traditional method usually uses a gasket, and under the extrusion of the flanges at both ends, the gasket is extruded and deformed to fit the two flange surfaces. However, since the gasket only has protrusions on one side, the gasket is not tightly attached to one of the flanges, and the sealing performance is poor.

Utility model content

In view of the above problems, the utility model provides a gasket structure for a flange, which can well solve the above problems and provide good sealing performance.

In order to achieve this purpose, the gasket structure for the flange designed by the utility model includes a gasket, a through hole is provided in the middle of the gasket, and threaded connection holes corresponding to the bolt holes of the flange are provided on the circumference of the gasket, which is characterized in that : The upper and lower surfaces of the gasket are provided with raised rings.

Further, the upper and lower raised rings correspond to each other.

Furthermore, a cavity is provided between the upper and lower raised rings.

The beneficial effects of the utility model are: the upper and lower surfaces of the gasket designed by the utility model are provided with protruding rings, the gasket is arranged in the middle of the two flanges, and the protruding rings on both sides are squeezed by the flanges on both sides It fits closely with the flange surface to form a good seal, and due to the influence of high-temperature exhaust gas during work, the gasket is pressed tighter and tighter. The manufacturing process is simple and the sealing performance is good.

Description of drawings

Fig. 1 is the sectional view that the utility model is installed in two flanges;

Fig. 2 is a schematic structural view of the utility model installed on a side flange;

Fig. 3 is the cross-sectional view of gasket in the utility model;

Fig. 4 is the structural representation that gasket is installed in two flanges in the utility model;

Fig. 5 is a top view of the structure of the gasket installed in the two flanges in the utility model;

Figure 6 is a front view of the structure of the gasket installed in the two flanges in the utility model;

Among them, 1—first flange, 2—gasket, 3—second flange, 4—flange hole, 5—cavity, 6—thread connection hole, 7—flange bolt hole, 8—raised ring .

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

The gasket structure for the flange shown in Figures 1 to 6 includes a gasket 2, a through hole is provided in the middle of the gasket 2, and a threaded connection hole 6 corresponding to the bolt hole 7 of the flange is provided on the circumference of the gasket 2. The upper and lower surfaces of the gasket 2 are provided with raised rings 8 .

In the above solution, the upper and lower raised rings 8 correspond to each other. Since the two protruding rings 8 are corresponding, when the sealing gasket 2 is squeezed by the flange, the structure is stable and the force is uniform.

In the above solution, a cavity 5 is provided between the upper and lower raised rings 8 . The cavity 5 ensures proper deformation of the gasket 2 .

The working process of the utility model is as follows: the upper and lower surfaces of the gasket 2 are provided with raised rings 8, the raised rings 8 are arranged in the upper and lower flanges, and the raised rings 8 on both sides are respectively matched with the respective flanges, Finally, the bolts are set in the flange bolt holes 7 to fix the gasket 2 , the first flange 1 and the second flange 3 . The gasket 2 is tightly attached to the flange surface under the extrusion of the first flange 1 and the second flange 3 . When the exhaust system is working, the temperature of the exhaust gas in the exhaust pipe is very high, and the flange and the gasket 2 are heated and expanded, so the flange surface and the gasket 2 are more tightly bonded.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any skilled person familiar with the art can easily think of changes within the technical scope disclosed in the utility model Or replacement, all should be covered within the scope of protection of the present utility model. Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (3)

1. flange gasket structure, comprise sealing gasket (2), be provided with through hole in the middle of sealing gasket (2), sealing gasket (2) be circumferentially with the threaded connection hole (6) corresponding with flange bolt hole (7), it is characterized in that: the upper and lower surface of described sealing gasket (2) is equipped with protruding ring (8).

2. a kind of flange gasket structure as claimed in claim 1, it is characterized in that: two protruding rings in described up and down (8) are corresponding.

3. a kind of flange gasket structure as claimed in claim 1 or 2, is characterized in that: be provided with cavity (5) in the middle of two protruding rings in described up and down (8).

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