Multi-layer sealing gasket capable of conveniently adjusting compression rebound rate

Abstract

The multi-layer sealing gasket comprises an upper ring gasket and a lower ring gasket, gaps used for containing different elastic ring gaskets are reserved between the upper ring gasket and the lower ring gasket, limiting ring grooves are formed in the contact faces of the upper ring gasket and the elastic ring gaskets and the contact faces of the lower ring gasket and the elastic ring gaskets, matched limiting protruding blocks are arranged on the upper faces and the lower faces of the elastic ring gaskets, and the limiting protruding blocks are matched with the limiting ring grooves. The limiting protruding blocks are located in the corresponding limiting ring grooves, the densities of the different elastic ring gaskets are different, and the surface structures and the sizes of the different elastic ring gaskets are completely the same. According to the multi-layer sealing gasket with the compression rebound rate convenient to adjust, the compression rebound rate of the sealing gasket can be adjusted, the sealing gasket can conveniently meet the use requirements of various different sealing specific pressures, and the application range of the sealing gasket is widened.

Description

Technical Field

[0001] The utility model relates to a multi-layer sealing pad which is convenient for adjusting the compression rebound rate. Background Art

[0002] Sealing gaskets are a common material used for sealing inside machinery, equipment, pipelines, etc. They are usually made of metal or non-metallic plate materials through cutting, stamping or tailoring processes. They are used for sealing connections between pipelines or between parts of machinery and equipment.

[0003] At present, the compression rebound performance of traditional gaskets is limited. When installed at positions with different sealing pressure ratio requirements, the compression rebound performance of the gasket is not convenient to adjust, which has the disadvantages of narrow application range and inconvenient use. In view of this, we propose a multi-layer gasket with easy adjustment of compression rebound rate. Summary of the invention

[0004] The utility model aims to provide a multi-layer sealing gasket with an easily adjustable compression rebound rate, which can adjust the compression rebound rate of the sealing gasket, is convenient for adapting to various use requirements of different sealing pressure ratios, and expands the application range of the sealing gasket.

[0005] To achieve the above-mentioned purpose, the technical solution of the utility model is to design a multi-layer sealing gasket which is easy to adjust the compression rebound rate, including: an upper ring gasket and a lower ring gasket, a gap is left between the upper ring gasket and the lower ring gasket for placing different elastic shrinkage ring gaskets, and limiting ring grooves are provided on the contact surfaces of the upper ring gasket, the lower ring gasket and the elastic shrinkage ring gasket, and the limiting ring grooves are arranged on the same axis as the upper ring gasket and the lower ring gasket, and matching limiting protrusions are provided on the upper and lower surfaces of the elastic shrinkage ring gasket, and the limiting protrusions are located in the corresponding limiting ring grooves, and the densities of different elastic shrinkage ring gaskets are different, and the surface structures and sizes of different elastic shrinkage ring gaskets are exactly the same.

[0006] Preferably, a plurality of sealing ribs are provided on the contact surfaces of the upper ring gasket, the lower ring gasket and the elastic shrinkage ring gasket. The sealing ribs are annular and are arranged at intervals around the ring groove. The sealing ribs of the upper ring gasket and the sealing ribs of the lower ring gasket are staggered up and down.

[0007] Preferably, the elastic shrink ring gasket is one of a copper ring gasket, an aluminum ring gasket, a graphite ring gasket, an aramid fiber ring gasket, and a polytetrafluoroethylene ring gasket.

[0008] Preferably, the upper ring gasket and the lower ring gasket are metal ring gaskets.

[0009] Preferably, the inner and outer diameters of the upper ring gasket, the lower ring gasket and the elastic shrink ring gasket are all the same.

[0010] The advantages and beneficial effects of the utility model are: providing a multi-layer sealing gasket that is easy to adjust the compression rebound rate, and realizing the adjustment of the compression rebound rate of the sealing gasket by replacing elastic ring gaskets of different densities between the upper ring gasket and the lower ring gasket, which is convenient for adapting to the use requirements of various different sealing pressure ratios and expanding the application range of the sealing gasket; at the same time, limiting ring grooves are arranged on the upper ring gasket and the lower ring gasket, and matching limiting protrusions are arranged on the upper and lower surfaces of the elastic ring gasket, and when the upper ring gasket and the lower ring gasket are squeezed, radial pressure and axial pressure are applied to the elastic ring gasket, thereby improving the overall sealing effect of the multi-layer sealing gasket. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the utility model.

[0012] Figure 2 It is a cross-sectional schematic diagram of the utility model. DETAILED DESCRIPTION

[0013] The following is a further description of the specific implementation of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0014] The technical solution specifically implemented in this utility model is:

[0015] like Figure 1 and Figure 2 As shown, a multi-layer sealing gasket which is easy to adjust the compression rebound rate includes: an upper ring gasket 1 and a lower ring gasket 2, a gap is reserved between the upper ring gasket 1 and the lower ring gasket 2 for placing different elastic shrink ring gaskets 3, a limiting ring groove 5 is provided on the contact surface between the upper ring gasket 1, the lower ring gasket 2 and the elastic shrink ring gasket 3, the limiting ring groove 5 is arranged on the same axis as the upper ring gasket 1 and the lower ring gasket 2, and the upper and lower surfaces of the elastic shrink ring gasket 3 are provided with matching limiting protrusions 6, and the limiting protrusions 6 are located in the corresponding limiting ring grooves 5, and the densities of different elastic shrink ring gaskets 3 are different, and the surface structures and sizes of different elastic shrink ring gaskets 3 are exactly the same.

[0016] A plurality of sealing ribs are also provided on the contact surfaces of the upper ring gasket 1, the lower ring gasket 2 and the elastic-shrinking ring gasket 3. The sealing ribs 7 are annular, and the plurality of sealing ribs 7 are arranged around the ring groove 4 at intervals. The sealing ribs of the upper ring gasket 1 and the sealing ribs of the lower ring gasket 2 are staggered up and down. In actual use, the setting of the sealing ribs 7 is beneficial to enhancing the sealing performance between the upper ring gasket 1, the lower ring gasket 2 and the elastic-shrinking ring gasket 3.

[0017] The above-mentioned elastic shrink ring gasket 3 is one of a copper ring gasket, an aluminum ring gasket, a graphite ring gasket, an aramid fiber ring gasket, and a polytetrafluoroethylene ring gasket; in actual use, according to the installation requirements of the sealing pressure ratio, the elastic shrink ring gasket 3 of the above-mentioned different density materials is selected and installed in the gap between the upper ring gasket 1 and the lower ring gasket 2 to achieve the adjustment of the compression rebound rate of the multi-layer sealing gasket, thereby expanding the application scope of the multi-layer sealing gasket.

[0018] The upper ring gasket 1 and the lower ring gasket 2 are metal ring gaskets.

[0019] The inner and outer diameters of the upper ring gasket 1, the lower ring gasket 2 and the elastic ring gasket 3 are all the same.

[0020] When in use, the multi-layer sealing gasket is installed between the parts of the machine equipment to play the role of sealing connection. Specifically, the upper ring gasket 1 and the lower ring gasket 2 are respectively set through the ring hole 4, and then the elastic shrinkage ring gasket 3 of the above-mentioned different density materials (that is, one of the copper ring gasket, aluminum ring gasket, graphite ring gasket, aramid fiber ring gasket, and polytetrafluoroethylene ring gasket) is selected according to the sealing pressure ratio installation requirements of the actual installation position, and installed in the gap between the upper ring gasket 1 and the lower ring gasket 2, and the limiting protrusion 6 of the elastic shrinkage ring gasket 3 is installed in the corresponding limiting ring groove 5. Finally, the assembly between the parts is completed, and the upper ring gasket 1 and the lower ring gasket 2 squeeze the elastic shrinkage ring gasket 3 up and down, and the sealing ribs 7 of the upper ring gasket 1 and the lower ring gasket 2 are offset and squeezed on the upper and lower surfaces of the elastic shrinkage ring gasket 3 to complete the installation of the multi-layer sealing gasket, and the compression rebound rate of the multi-layer sealing gasket is adjusted to meet different usage requirements.

[0021] Among them, when the upper ring gasket and the lower ring gasket are subjected to axial compression, the upper ring gasket and the lower ring gasket play a protective role on the elastic shrink ring gasket. The matching setting of the limiting ring groove and the limiting protrusion gives radial pressure and axial pressure to the elastic shrink ring gasket. The sealing rib fixes the elastic shrink ring gasket, thereby improving the overall sealing effect of the multi-layer sealing gasket.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-layer sealing gasket that is easy to adjust the compression rebound rate, characterized in that: include: An upper ring pad and a lower ring pad, a gap is left between the upper ring pad and the lower ring pad for placing different elastic-shrink ring pads, a limiting ring groove is provided on the contact surface of the upper ring pad, the lower ring pad and the elastic-shrink ring pad, the limiting ring groove is arranged on the same axis as the upper ring pad and the lower ring pad, and matching limiting protrusions are provided on the upper and lower surfaces of the elastic-shrink ring pad, and the limiting protrusions are located in the corresponding limiting ring grooves, and the densities of different elastic-shrink ring pads are different, and the surface structures and sizes of different elastic-shrink ring pads are exactly the same.

2. A multi-layer sealing gasket with easy-to-adjust compression rebound rate according to claim 1, characterized in that: A plurality of sealing ribs are also provided on the contact surfaces of the upper ring gasket, the lower ring gasket and the elastic shrink ring gasket. The sealing ribs are annular and are arranged at intervals around the ring groove. The sealing ribs of the upper ring gasket and the sealing ribs of the lower ring gasket are staggered up and down.

3. The multi-layer sealing gasket with easy-to-adjust compression rebound rate according to claim 2, characterized in that: The elastic shrink ring gasket is one of a copper ring gasket, an aluminum ring gasket, a graphite ring gasket, an aramid fiber ring gasket, and a polytetrafluoroethylene ring gasket.

4. The multi-layer sealing gasket with easy-to-adjust compression rebound rate according to claim 3, characterized in that: The upper ring gasket and the lower ring gasket are metal ring gaskets.

5. The multi-layer sealing gasket with easy-to-adjust compression rebound rate according to claim 4, characterized in that: The inner and outer diameters of the upper ring gasket, the lower ring gasket and the elastic shrink ring gasket are all the same.

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