Sealing packing ring

Abstract

The invention relates to a sealing packing ring. The sealing packing ring comprises a plurality of layers of metal slices and a plurality of flexible material layers; the topmost layer and the bottommost layer of the sealing packing ring are the metal slices; each flexible material layer is arranged between two corresponding adjacent metal slices; and a plurality of projections and a plurality of recesses which are formed by punching are uniformly distributed on each metal slice. By using the technical scheme, the sealing packing ring is formed by combining the flexible sealing material layers and the layers of the metal punched slices. The sealing packing ring has the advantages of high structural strength, high material binding force, high pressure resistance and wear resistance.

Description

technical field [0001] The invention relates to a sealing stuffing ring, in particular to a shaft sealing stuffing ring used for static or low linear speed. Background technique [0002] In the prior art, the packing ring is generally used for shaft sealing at rest or with a small linear speed. It is made of a single flexible material. The structural strength of the material is low, and it cannot withstand high pressure conditions. The medium material is blown out or worn by the medium, and there is also a problem of adding a metal gland on the surface of the packing ring or matching a metal braided wire to improve the strength of the material, but the metal gland is a smooth steel pad and has poor bonding force with the flexible sealing material, and it is easy to fall off during installation. There is a leakage problem during use, and the metal gland only exists on the surface, which is very limited in improving the strength, and the metal braided wire also has the problem...

AI Technical Summary

Problems solved by technology

[0002]In the prior art, the packing rings are generally used for shaft seals at rest or with small linear speeds. They are made of a single flexible material, and the structural strength of the material is relatively high. Low, can not resist higher pressure working conditions, the material is easy to be blown out or worn by the medium during use, and there is also a problem of adding a metal gland on the surface of the packing ring or using a metal braided wire to improve the strength of the material, but the metal gland is smooth The bonding force between the steel pad and the flexible sealing material is poor, and it is easy to fall off during installation and leak during use. At the same time, the metal gland only exists on the surface, which has limited strength improvement, and the metal braided wire also has the problem of low strength.

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