Novel sealing ring for roller bit

Abstract

The invention provides a novel sealing ring for a roller bit. The novel sealing ring comprises a sealing ring body, a first projection and a second projection, the first projection and the second projection are positioned on the sealing ring body and close to one end of the sealing ring body and obliquely face the inner side and the outer side of the sealing ring respectively, a first concave structure is formed between the first projection and the second projection, and a second concave structure is arranged on the side surface of the sealing ring body. The sealing ring is provided with the first concave structure, so that the sealing ring has elastic margins, expansion deformation of the sealing ring is avoided, sealing performance of the sealing ring is improved, the sealing ring is provided with the second concave structure, more lubricating oil can be stored, good lubricating function is achieved, sludge cannot enter a sealing surface by the aid of the first projection and the second projection, so that the sealing ring is durably protected, and the service life of the sealing ring is prolonged.

Description

technical field [0001] The invention relates to a sealing ring, in particular to a new sealing ring for a roller cone bit. Background technique [0002] The roller cone bit is the most widely used type of drilling bit. When the roller cone bit is working, the cutting teeth alternately contact the bottom of the well, the rock-breaking torque is small, the contact area between the cutting teeth and the bottom of the well is small, the specific pressure is high, and it is easy to penetrate into the formation; the total length of the working blade is large, so the wear is relatively reduced. Roller cone bits can adapt to a variety of formations from soft to hard. When the roller cone bit is in use, it needs to be sealed to ensure the normal operation of the roller cone bit. . However, the sealing rings of existing roller cone bits are usually O-shaped sealing rings. Although they also have a certain sealing effect, mud and rock debris can easily enter the sealing surface duri...

AI Technical Summary

Problems solved by technology

However, the sealing rings of existing roller cone bits are usually O-shaped sealing rings. Although they also have a certain sealing effect, mud and rock debris can easily enter the sealing surface during use, which is likely to cause wear and tear on the sealing working surface. , its sealing effect is reduced and cannot achieve a good sealing effect

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